EP3764020B1 - Unité intérieure et climatiseur - Google Patents

Unité intérieure et climatiseur Download PDF

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Publication number
EP3764020B1
EP3764020B1 EP18908382.7A EP18908382A EP3764020B1 EP 3764020 B1 EP3764020 B1 EP 3764020B1 EP 18908382 A EP18908382 A EP 18908382A EP 3764020 B1 EP3764020 B1 EP 3764020B1
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EP
European Patent Office
Prior art keywords
air
indoor unit
air path
down airflow
pseudo
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.)
Active
Application number
EP18908382.7A
Other languages
German (de)
English (en)
Other versions
EP3764020A4 (fr
EP3764020A1 (fr
Inventor
Yusuke Hagiwara
Hiroaki Makino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Publication of EP3764020A1 publication Critical patent/EP3764020A1/fr
Publication of EP3764020A4 publication Critical patent/EP3764020A4/fr
Application granted granted Critical
Publication of EP3764020B1 publication Critical patent/EP3764020B1/fr
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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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
    • 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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • F24F1/0043—Indoor units, e.g. fan coil units characterised by mounting arrangements
    • F24F1/0057—Indoor units, e.g. fan coil units characterised by mounting arrangements mounted in or on a wall
    • 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
    • F24F13/10—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers
    • F24F13/14—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre
    • F24F13/15—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre with parallel simultaneously tiltable lamellae
    • 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
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • 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
    • F24F13/22—Means for preventing condensation or evacuating condensate
    • F24F2013/221—Means for preventing condensation or evacuating condensate to avoid the formation of condensate, e.g. dew

Definitions

  • the present invention relates to an indoor unit and an air-conditioning apparatus, and more particularly to an airflow deflector.
  • Some indoor unit of an air-conditioning apparatus includes an air inlet in an upper portion of an indoor unit body and an air outlet in a lower portion of the indoor unit body. Inside the indoor unit body, a fan and a heat exchanger are disposed in an air passage from the air inlet to the air outlet. An air outlet path leading to the air outlet is formed downstream of the fan. An up-down airflow deflector for changing an up-down airflow direction is disposed close to the air outlet. Electric components are disposed either at the left or right portion inside the indoor unit body.
  • an air outlet width is reduced. This leads to poor distribution of airflow in the left-right direction. Additionally, as the air outlet is close either to the left or to the right, an appearance of the indoor unit is asymmetrical in the left-right direction. To remedy these problems, a pseudo air path part is provided at an end portion of the air outlet so that a lateral width of the up-down airflow deflector is greater than an air path width of the air outlet.
  • the up-down airflow deflector is disposed on an upper air path where air outlet speed is high.
  • Another proposed solution to preventing dew condensation during a cooling operation is to use an indoor unit that includes an air outlet direction guide on a guiding surface of an up-down airflow deflector so that blown air is guided further outward to prevent indoor air from being drawn in (for example, see Patent Literature 1).
  • JP H11 237107 A describes an air conditioner with an inlet is provided at an upper portion of a body, an outlet is provided at a lower portion of the body, a stepped recess formed contiguously to one side of the outlet, and a horizontal louver pivotally supported by a shaft between a side wall of the stepped recess and a side wall at the other side of the outlet. Further, a heat exchanger and a blower are provided in an air path connecting the inlet and the outlet. An air interception board is formed in a longitudinal direction so as to intercept air blow toward one side of the upper surface of the horizontal louver when the louver is rotated and positioned in a horizontal direction in front of the stepped recess.
  • Patent Literature 1 Japanese Unexamined Patent Application Publication No. 6-288605
  • the effect of providing the air outlet direction guide is obtained only at a location where an air outlet speed is at a certain rate.
  • the air outlet speed may be low depending on factors such as height positions of the pseudo air path part and the up-down airflow deflector, so that a problem lies in that providing the air outlet direction guide is less effective in preventing indoor air from being drawn in.
  • the present invention aims to provide an indoor unit and an air-conditioning apparatus capable of preventing dew condensation on the up-down airflow deflector.
  • an indoor unit includes the features of claim 1.
  • the indoor unit includes a shielding plate on an up-down airflow deflector. This allows to block the flow of high temperature indoor air containing moisture and to thus prevent its entry into the air outlet. This, in turn, allows to avoid collision with air blown from inside the housing of the indoor unit, helping prevent the backflow of air around the pseudo air path part and prevent dew condensation.
  • Fig. 1 shows an exterior of an indoor unit 100 of an air-conditioning apparatus according to Embodiment 1 of the present invention.
  • Fig. 2 shows an internal structure of the indoor unit 100 of the air-conditioning apparatus in Embodiment 1 of the present invention.
  • the indoor unit 100 of the air-conditioning apparatus in Embodiment 1 is shown to be a wall-mounted indoor unit installed on a wall, although the indoor unit 100 may be of any other type.
  • the indoor unit 100 of the air-conditioning apparatus (hereinafter referred to as the "indoor unit 100") includes an indoor unit body 1 and a front panel 2.
  • the indoor unit body 1 and the front panel 2 form a housing of the indoor unit 100.
  • the indoor unit body 1 includes an air inlet 1a, an air outlet 1b, a front air path surface 1c, and a rear air path surface 1d.
  • the air inlet 1a is an opening port through which air around the indoor unit 100 flows into the indoor unit 100.
  • the air outlet 1b is an opening port located in a lower portion of the indoor unit body 1 and through which air having flowed into the indoor unit 100 is blown to the outside of the indoor unit 100.
  • the front air path surface 1c and the rear air path surface 1d are walls defining an air path from the air inlet 1a to the air outlet 1b inside the housing of the indoor unit 100.
  • the front panel 2 is a design part.
  • the indoor unit 100 further includes an indoor heat exchanger 3 and a cross-flow fan 4 in the indoor unit 100.
  • Driving the cross-flow fan 4 causes air around the indoor unit 100 to flow into the indoor unit 100 through the air inlet 1a, pass through the indoor heat exchanger 3 and the cross-flow fan 4, and pass through the air path to flow out from the air outlet 1b.
  • the indoor heat exchanger 3 exchanges heat between air passing through the indoor heat exchanger 3 and refrigerant flowing in a heat transfer tube included in the indoor heat exchanger 3 to heat or cool the air for air-conditioning.
  • the indoor heat exchanger 3 covers the cross-flow fan 4 in a portion of the air path through which the air is suctioned and that is located upstream of the cross-flow fan 4 (that is a portion of the air path through which the air passes before the air reaches the cross-flow fan 4).
  • the air having exchanged heat in the indoor heat exchanger 3 is blown to the outside of the indoor unit 100 so that an air-conditioned space where the indoor unit 100 is installed is air-conditioned.
  • the indoor unit 100 also includes, at the air outlet 1b, left-right airflow deflectors 11 and up-down airflow deflectors 5.
  • the left-right airflow deflectors 11 adjust a left-right direction, which is a width direction of the indoor unit 100, of the air blown from the indoor unit 100.
  • the up-down airflow deflectors 5 adjust a vertical direction (up-down direction), which is a height direction of the indoor unit 100, of the air blown from the indoor unit 100.
  • the indoor unit 100 of Embodiment 1 includes two up-down airflow deflectors 5 (a first up-down airflow deflector 5a and a second up-down airflow deflector 5b) arranged in the up-down direction.
  • Each up-down airflow deflector 5 is configured to freely swing in the up-down direction around a pivot.
  • a driving motor (not shown) is attached to each of the left and right of the unit, and one of the driving motors is connected to the pivot of the first up-down airflow deflector 5a and the other one of the driving motors is connected to the pivot of the second up-down airflow deflector 5b.
  • Operating of each driving motor causes the corresponding one of the up-down airflow deflectors 5 to freely swing in the up-down direction. This allows the up-down airflow deflectors 5 to each freely adjust, independently from each other, the up-down direction of the air blown from the indoor unit 100.
  • the indoor unit 100 further includes an electric component box (not shown) in the indoor unit 100.
  • the electric component box contains electric components such as a control board to control the cross-flow fan 4 and the aforementioned driving motors to drive the up-down airflow deflectors 5.
  • the electric component box When viewed from the front, the electric component box is located in an internal space at the right portion inside the indoor unit 100 of Fig. 1 .
  • Fig. 3 shows the air outlet 1b of the indoor unit 100 according to Embodiment 1 of the present invention and a structure around the air outlet 1b that is beside a location inside which the electric component box is located.
  • Fig. 3 is an enlarged view of the part A in Fig. 1 .
  • the space accommodating the electric component box is partitioned from the air path through which air passes, and thus no air flows in the space. This decreases the width of the air path relative to the entire width of the indoor unit 100.
  • the internal space accommodating the electric component box is located either at the left or right portion inside the indoor unit 100 (at the right portion inside the indoor unit 100 as viewed in Fig. 1 ), and this results in uneven airflow. This leads to poor distribution of airflow to the left-right direction. In particular, air hardly flows to the right of the indoor unit 100 of Fig. 1 . Further, the appearance of the air outlet 1b is rendered asymmetrical in the left-right direction.
  • an end portion of the air outlet 1b that is beside the location inside which the electric component box is located is formed as a pseudo air path part 6, as shown in Fig. 3 .
  • the pseudo air path part 6 is adjacent to the air path and includes a pseudo air path formed to widen the air outlet 1b.
  • the pseudo air path is a dummy part to make the appearance of the air outlet 1b symmetrical in the left-right direction.
  • the air outlet 1b and the up-down airflow deflectors 5 extend over the air path and the pseudo air path part 6.
  • the width of the air outlet 1b and the widths of the up-down airflow deflectors 5 are larger than the width of the air path, through which air passes, by the width of the pseudo air path part 6.
  • Fig. 4 illustrates a shielding plate 7 provided on the second up-down airflow deflector 5b of the indoor unit 100 according to Embodiment 1 of the present invention.
  • Fig. 4 shows a diagram viewed in the direction of an arrow B in Fig. 3 .
  • the indoor unit 100 of Embodiment 1 includes the shielding plate 7 on the guiding surface of the second up-down airflow deflector 5b disposed at the air outlet 1b.
  • the shielding plate 7 is located at the end portion of the second up-down airflow deflector 5b beside which the electric component box is located.
  • the shielding plate 7 is provided close to a boundary between the air path through which air passes and the pseudo air path of the pseudo air path part 6.
  • the shielding plate 7 of the indoor unit 100 of Embodiment 1 is formed integrally with the second up-down airflow deflector 5b.
  • Fig. 5 illustrates airflow around the portion of the air outlet 1b of the indoor unit 100 according to Embodiment 1 of the present invention that is beside the location inside which the electric component box is located.
  • Fig. 5 shows a diagram viewed in the direction of an arrow C in Fig. 4 .
  • the shielding plate 7 is disposed on the guiding surface of the second up-down airflow deflector 5b in such a manner that a plate end 10 that is the windward end in the airflow from the air path is positioned windward of a pivot center 9 of the second up-down airflow deflector 5b.
  • the shielding plate 7 is disposed in such a manner that its plate face is parallel to an air outlet direction 1e of air-conditioned air blown from the air path in the indoor unit 100. Positioning the shielding plate 7 on the second up-down airflow deflector 5b in the manner described above helps effectively prevent collision between the air-conditioned air sent from the air path and the indoor air 8.
  • the shielding plate 7 is disposed within a range corresponding to the pseudo air path part 6 so that the shielding plate 7 does not stand in the air path of air blown from the air outlet 1b. Disposing the shielding plate 7 within the range corresponding to the pseudo air path part 6 helps reduce airflow resistance and prevent dew condensation caused by backflow of the indoor air 8 during a cooling operation, without increasing in outlet pressure loss.
  • the shielding plate 7 has a triangular cross-section. This ensures that even when the first up-down airflow deflector 5a swings, the first up-down airflow deflector 5a does not contact the shielding plate 7, preventing interference between the first up-down airflow deflector 5a and the shielding plate 7.
  • the shape of the shielding plate 7 is not limited to a triangle and may be of any other shape that allows to avoid contact between the first up-down airflow deflector 5a and the shielding plate 7.
  • the shielding plate 7 is described to be provided only on the second up-down airflow deflector 5b, but the location to which the shielding plate 7 is provided is not limited.
  • the first up-down airflow deflector 5a may also include the shielding plate 7.
  • the shielding plate 7 is disposed on the guiding surface of the second up-down airflow deflector 5b and disposed at the end portion of the second up-down airflow deflector 5b that is close to the pseudo air path part 6, where airflow speed is low. This allows to block the backflow of the indoor air 8 and prevent dew condensation on the second up-down airflow deflector 5b. Further, in the indoor unit 100, the up-down airflow deflectors 5 can be located also at portions where air outlet speed is low. Enlarging the air outlet 1b allows to increase recovery of static pressure and to leads to improve fan performance.
  • Fig. 6 shows an exemplary configuration of an air-conditioning apparatus according to Embodiment 2 of the present invention.
  • the air-conditioning apparatus shown in Fig. 6 is an example of a refrigeration cycle apparatus.
  • components already described with reference to Fig. 1 and other drawings are defined to operate in a similar manner to the above.
  • the air-conditioning apparatus of Fig. 6 includes an outdoor unit 200, the indoor unit 100 described in Embodiment 1, a gas refrigerant pipe 300, and a liquid refrigerant pipe 400.
  • the outdoor unit 200 and the indoor unit 100 are connected by the gas refrigerant pipe 300 and the liquid refrigerant pipe 400 to form a refrigerant circuit circulating refrigerant.
  • the outdoor unit 200 includes a compressor 210, a four-way valve 220, an outdoor heat exchanger 230, and an expansion valve 240.
  • the compressor 210 compresses refrigerant suctioned into the compressor 210 and discharges it.
  • the compressor 210 may be one that is capable of changing its capacity (refrigerant discharge amount per unit time) by having its operating frequency changed optionally by, for example, an inverter circuit, although the compressor 210 is not limited to a particular type of compressor.
  • the four-way valve 220 is, for example, a valve configured to switch flow directions of refrigerant depending on which of a cooling operation and a heating operation is performed.
  • the outdoor heat exchanger 230 of the present embodiment exchanges heat between refrigerant and air (outdoor air).
  • the outdoor heat exchanger 230 is used as an evaporator during a heating operation to evaporate and gasify the refrigerant.
  • the outdoor heat exchanger 230 is used as a condenser to condense and liquefy the refrigerant.
  • the expansion valve 240 which is a device such as an expansion device (flow rate control unit), reduces pressure of the refrigerant to expand the refrigerant.
  • the expansion valve 240 is, for example, an electronic expansion valve, its opening degree is regulated under the control of a controller (not shown) or similar devices.
  • the indoor heat exchanger 3 described in Embodiment 1 exchanges heat between, for example, air to be air-conditioned and the refrigerant.
  • the indoor heat exchanger 3 is used as a condenser to condense and liquefy the refrigerant.
  • the indoor heat exchanger 3 is used as an evaporator to evaporate and gasify the refrigerant.
  • the cross-flow fan 4 allows air to pass through the indoor unit 100 for conditioning of the air and sends it to the air-conditioned space, as described above.
  • the air-conditioning apparatus configured as described above is capable of performing a heating operation and a cooling operation by switching flow directions of the refrigerant by the four-way valve 220 in the outdoor unit 200.
  • the air-conditioning apparatus of Embodiment 2 includes the shielding plate 7. This allows to avoid contact between cold air blown from the indoor unit 100 and warm indoor air during a cooling operation, helping prevent dew condensation.
  • the configuration described above is also applicable to other refrigeration cycle apparatuses, such as an indoor unit of refrigerating apparatuses and freezing apparatuses.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Flow Control Members (AREA)
  • Air Filters, Heat-Exchange Apparatuses, And Housings Of Air-Conditioning Units (AREA)
  • Devices For Blowing Cold Air, Devices For Blowing Warm Air, And Means For Preventing Water Condensation In Air Conditioning Units (AREA)

Claims (4)

  1. Unité intérieure (100) comprenant :
    un boîtier comprenant une sortie d'air (1b) dans une partie inférieure du boîtier ;
    un déflecteur de flux d'air ascendant-descendant (5) positionné au niveau de la sortie d'air (1b), le déflecteur de flux d'air ascendant-descendant (5) étant configuré pour ajuster une direction d'air soufflé à partir d'une trajectoire d'air à l'intérieur du boîtier ; et
    une partie de pseudo-trajectoire d'air (6) adjacente à la trajectoire d'air, la partie de pseudo-trajectoire d'air (6) comprenant une pseudo-trajectoire d'air à travers laquelle l'air à l'intérieur du boîtier ne passe pas,
    la sortie d'air (1b) et le déflecteur de flux d'air ascendant-descendant (5) s'étendant sur la trajectoire d'air et la partie de pseudo-trajectoire d'air (6) dans une direction de largeur du boîtier, caractérisé en ce que :
    le déflecteur de flux d'air ascendant-descendant (5) comprend
    une plaque de protection (7) au niveau d'une partie d'extrémité du déflecteur de flux d'air ascendant-descendant (5) qui est à proximité de la partie de pseudo-trajectoire d'air (6), la plaque de protection (7) est prévue à proximité d'une limite entre la trajectoire d'air à travers laquelle l'air passe et la pseudo-trajectoire d'air de la partie de pseudo-trajectoire d'air (6), la plaque de protection (7) comprenant une face de plaque s'étendant le long d'une direction dans laquelle l'air est soufflé à partir de la trajectoire d'air.
  2. Unité intérieure (100) selon la revendication 1, comprenant en outre :
    une pluralité de déflecteurs de flux d'air ascendant-descendant (5) agencés dans une direction de hauteur du boîtier, dans laquelle :
    la face de plaque de la plaque de protection (7) disposée sur un déflecteur inférieur de la pluralité de déflecteurs de flux d'air ascendant-descendant (5) est formée selon une forme triangulaire.
  3. Unité intérieure (100) selon l'une quelconque des revendications 1 ou 2, comprenant en outre :
    un ventilateur tangentiel (4) installé à l'intérieur du boîtier ; et
    un échangeur de chaleur (3) configuré pour chauffer et refroidir l'air s'écoulant à l'intérieur du boîtier.
  4. Climatiseur comprenant :
    une unité intérieure (100) selon l'une quelconque des revendication 1 à 3 ; et
    une unité extérieure (200) raccordée par tuyauterie à l'unité intérieure (100) afin de former un circuit réfrigérant configuré pour faire circuler le réfrigérant.
EP18908382.7A 2018-03-06 2018-03-06 Unité intérieure et climatiseur Active EP3764020B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/JP2018/008537 WO2019171462A1 (fr) 2018-03-06 2018-03-06 Unité intérieure et climatiseur

Publications (3)

Publication Number Publication Date
EP3764020A1 EP3764020A1 (fr) 2021-01-13
EP3764020A4 EP3764020A4 (fr) 2021-03-03
EP3764020B1 true EP3764020B1 (fr) 2023-09-27

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EP18908382.7A Active EP3764020B1 (fr) 2018-03-06 2018-03-06 Unité intérieure et climatiseur

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EP (1) EP3764020B1 (fr)
JP (1) JPWO2019171462A1 (fr)
CN (1) CN210772705U (fr)
WO (1) WO2019171462A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7194661B2 (ja) * 2019-09-30 2022-12-22 ダイキン工業株式会社 空気調和装置の室内ユニット、空気調和装置
JP6897739B2 (ja) * 2019-09-30 2021-07-07 ダイキン工業株式会社 空気調和装置の室内ユニット、空気調和装置
EP4086527A4 (fr) * 2019-12-30 2024-02-28 Hisense Guangdong Air Conditioning Co Ltd Unité intérieure de climatiseur

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2532440Y2 (ja) * 1991-06-07 1997-04-16 株式会社富士通ゼネラル 空気調和機の室内ユニット
JP3136832B2 (ja) 1993-04-05 2001-02-19 ダイキン工業株式会社 空気調和機の室内機
JPH11237107A (ja) * 1998-02-24 1999-08-31 Fujitsu General Ltd 空気調和機
JP5268668B2 (ja) * 2009-01-16 2013-08-21 三菱電機株式会社 空気調和機
JP4766161B2 (ja) * 2009-08-04 2011-09-07 ダイキン工業株式会社 空気調和機の室内機
JP5402616B2 (ja) * 2009-12-24 2014-01-29 株式会社富士通ゼネラル 空気調和機
JP5486576B2 (ja) * 2011-10-27 2014-05-07 シャープ株式会社 空気調和機
RU2664220C1 (ru) * 2015-03-02 2018-08-15 Мицубиси Электрик Корпорейшн Устанавливаемый внутри помещения блок устройства для кондиционирования воздуха

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Publication number Publication date
CN210772705U (zh) 2020-06-16
EP3764020A4 (fr) 2021-03-03
WO2019171462A1 (fr) 2019-09-12
JPWO2019171462A1 (ja) 2020-12-10
EP3764020A1 (fr) 2021-01-13

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