CN114144623A - Blow-out grille, indoor unit, and air conditioning device - Google Patents
Blow-out grille, indoor unit, and air conditioning device Download PDFInfo
- Publication number
- CN114144623A CN114144623A CN201980097640.XA CN201980097640A CN114144623A CN 114144623 A CN114144623 A CN 114144623A CN 201980097640 A CN201980097640 A CN 201980097640A CN 114144623 A CN114144623 A CN 114144623A
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- China
- Prior art keywords
- air
- indoor
- opening
- width direction
- refrigerant
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- 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.)
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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
- 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
- F24F13/10—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
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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
Abstract
The blowing grille includes: a frame body having an opening through which air is blown; a plurality of side louvers which are provided at intervals in the width direction at the opening of the frame, extend in the vertical direction, and swing in the width direction with the vertical direction as an axis; and a shielding part protruding from the end part of the opening of the frame body in the width direction towards the side louver boards.
Description
Technical Field
The present invention relates to a discharge grill in which an opening through which air is discharged is formed, an indoor unit, and an air conditioning apparatus.
Background
Conventionally, as a discharge grill in which an opening through which air is discharged is formed, a discharge grill mounted to a ceiling-embedded indoor unit of an air conditioner is known. In a ceiling-embedded indoor unit, generally, a portion of an air outlet formed in a casing of the indoor unit and an outlet grill provided on a ceiling surface are connected by a duct. The cool air or warm air blown out of the indoor unit is blown out through the duct from the outlet grill into the room. In recent years, there has been proposed a blowout grill that is directly attached to a portion of an air outlet formed in a casing of an indoor unit, by installing a ceiling-embedded indoor unit in a ceiling or the like.
The blowout grill has louvers for changing the blowout direction of air. In recent years, there have been proposed many blow grills having electrically-controlled louvers for use in a wall-mounted indoor unit for home use. In the blowout grill, a plurality of louvers for controlling the airflow are arranged at appropriate intervals.
Patent document 1: chinese utility model No. 203231493 specification
However, the indoor unit disclosed in patent document 1 does not include a vertical blade at the end of the outlet port. Therefore, the air flowing at the end of the air outlet becomes a straight flow. Therefore, since the straight flow collides with the airflow in the direction rearward of the control by the vertical blades, it is possible to block the airflow in the direction rearward of the control by the vertical blades from being directed to the side.
Disclosure of Invention
The present invention has been made to solve the above-described problems, and provides a blowout grill, an indoor unit, and an air conditioning apparatus that do not obstruct the airflow directed to the side by the side louvers as vertical blades.
The blowout grill of the present invention includes: a frame body having an opening through which air is blown; a plurality of side louvers which are provided at intervals in the width direction at the opening of the frame, extend in the vertical direction, and swing in the width direction with the vertical direction as an axis; and a shielding part protruding from the end part of the opening of the frame body in the width direction towards the side louver boards.
According to the present invention, the shielding portion blocks air flowing in the end portion in the width direction of the opening of the frame. Therefore, the flow of the straight flow is suppressed at the end in the width direction of the opening of the housing. Therefore, the straight flow collides with the airflow rearward controlled by the side louvers, and the airflow rearward controlled by the side louvers is not blocked from being directed to the side.
Drawings
Fig. 1 is a circuit diagram showing an air conditioner 1 according to embodiment 1.
Fig. 2 is a perspective view showing an indoor unit 3 according to embodiment 1.
Fig. 3 is a perspective cross-sectional view showing an indoor unit 3 according to embodiment 1.
Fig. 4 is a side sectional view showing an indoor unit 3 according to embodiment 1.
Fig. 5 is a perspective view showing the blowout grill 30 according to embodiment 1.
Fig. 6 is a front view showing the blowout grill 30 according to embodiment 1.
Fig. 7 is a top sectional view showing the blowout grill 30 according to embodiment 1.
Fig. 8 is a schematic view showing the side louver 80 and the shielding portion 90 according to embodiment 1.
Fig. 9 is a distribution diagram showing the distribution of the airflow in embodiment 1.
Fig. 10 is a schematic view showing a side louver 80 of comparative example 2.
Detailed Description
Embodiments of a blowout grill, an indoor unit, and an air conditioning apparatus according to the present invention will be described below with reference to the drawings. The present invention is not limited to the embodiments described below. In the drawings including fig. 1, the size relationship of each component may be different from the actual one in the following drawings. In the following description, terms indicating directions are used as appropriate for easy understanding of the present invention, but these terms are used for describing the present invention and do not limit the present invention. Examples of the terms indicating the direction include "up", "down", "right", "left", "front", and "rear".
Fig. 1 is a circuit diagram showing an air conditioner 1 according to embodiment 1. The air conditioner 1 is a device for adjusting indoor air, and includes an outdoor unit 2 and an indoor unit 3, as shown in fig. 1. The outdoor unit 2 includes, for example, a compressor 6, a flow switching device 7, an outdoor heat exchanger 8, an outdoor fan 9, and an expansion unit 10. The indoor unit 3 is provided with, for example, an indoor heat exchanger 11 and an indoor fan 12.
The compressor 6, the flow switching device 7, the outdoor heat exchanger 8, the expansion unit 10, and the indoor heat exchanger 11 are connected by the refrigerant pipe 5 to constitute the refrigerant circuit 4. The compressor 6 sucks a refrigerant in a low-temperature and low-pressure state, compresses the sucked refrigerant into a refrigerant in a high-temperature and high-pressure state, and discharges the refrigerant. The flow switching device 7 switches the direction of the refrigerant flow in the refrigerant circuit 4, and is, for example, a four-way valve. The outdoor heat exchanger 8 exchanges heat between outdoor air and refrigerant, for example. The outdoor heat exchanger 8 functions as a condenser during the cooling operation and functions as an evaporator during the heating operation. The outdoor blower 9 is a device that sends outdoor air to the outdoor heat exchanger 8.
The expansion unit 10 is a pressure reducing valve or an expansion valve that reduces and expands the pressure of the refrigerant. The expansion unit 10 is, for example, an electronic expansion valve whose opening degree is adjusted. The indoor heat exchanger 11 exchanges heat between, for example, indoor air and refrigerant. The indoor heat exchanger 11 functions as an evaporator during the cooling operation and functions as a condenser during the heating operation. The indoor fan 12 is a device that sends indoor air to the indoor heat exchanger 11. The refrigerant may be water, an antifreeze, or a refrigerant.
(operation mode, Cooling operation)
Next, the operation mode of the air conditioner 1 will be described. First, the cooling operation will be described. In the cooling operation, the refrigerant sucked into the compressor 6 is compressed by the compressor 6 and discharged in a high-temperature and high-pressure gas state. The high-temperature and high-pressure refrigerant in a gas state discharged from the compressor 6 passes through the flow switching device 7, flows into the outdoor heat exchanger 8 functioning as a condenser, and is condensed and liquefied in the outdoor heat exchanger 8 by heat exchange with outdoor air sent by the outdoor air-sending device 9. The condensed refrigerant in the liquid state flows into the expansion unit 10, is expanded and decompressed in the expansion unit 10, and becomes a low-temperature and low-pressure refrigerant in a gas-liquid two-phase state. Then, the refrigerant in the gas-liquid two-phase state flows into the indoor heat exchanger 11 functioning as an evaporator, and is evaporated and gasified in the indoor heat exchanger 11 by heat exchange with the indoor air sent by the indoor air-sending device 12. At this time, the indoor air is cooled, and cooling is performed indoors. The evaporated low-temperature low-pressure refrigerant in a gas state is sucked into the compressor 6 through the flow switching device 7.
(operation mode, heating operation)
Next, the heating operation will be described. In the heating operation, the refrigerant drawn into the compressor 6 is compressed by the compressor 6 and discharged in a high-temperature and high-pressure gas state. The high-temperature and high-pressure refrigerant in a gas state discharged from the compressor 6 flows into the indoor heat exchanger 11 functioning as a condenser through the flow switching device 7, and is condensed and liquefied in the indoor heat exchanger 11 by heat exchange with the indoor air sent by the indoor air-sending device 12. At this time, the indoor air is heated, and heating is performed indoors. The condensed refrigerant in the liquid state flows into the expansion unit 10, is expanded and decompressed in the expansion unit 10, and becomes a low-temperature and low-pressure refrigerant in a gas-liquid two-phase state. Then, the refrigerant in the gas-liquid two-phase state flows into the outdoor heat exchanger 8 functioning as an evaporator, and is evaporated and gasified in the outdoor heat exchanger 8 by heat exchange with the outdoor air sent by the outdoor air-sending device 9. The evaporated low-temperature low-pressure refrigerant in a gas state is sucked into the compressor 6 through the flow switching device 7.
(indoor machine 3)
Fig. 2 is a perspective view showing an indoor unit 3 according to embodiment 1, and fig. 3 is a perspective cross-sectional view showing the indoor unit 3 according to embodiment 1. Fig. 4 is a side sectional view showing an indoor unit 3 according to embodiment 1. Next, the indoor unit will be described in detail. The indoor unit 3 is, for example, a ceiling-embedded indoor unit 3 embedded in a ceiling. As shown in fig. 2 to 4, the indoor unit 3 includes a casing 20 and an outlet grill 30.
(case 20)
The housing 20 is a box having a rectangular parallelepiped shape and a hollow portion formed therein. An indoor heat exchanger 11 and an indoor blower 12 are provided inside the casing 20. The indoor heat exchanger 11 is disposed in front of the inside of the casing 20. The indoor blower 12 is provided at the rear of the inside of the casing 20, and includes a motor 12a and two fans 12b. The motor 12a is provided between the two fans 12b, and rotationally drives the two fans 12b. The fan 12b is rotationally driven by the motor 12a and sends air to the indoor heat exchanger 11.
The casing 20 has a suction port 21 and a discharge port 22. The suction port 21 is an opening 51 through which air is sucked, and is formed in the rear surface of the housing 20. The air outlet 22 is an opening 51 through which air is blown out, and is formed in the front surface of the casing 20. The indoor air blower 12 sucks in indoor air from the suction port 21 and sends the sucked air to the indoor heat exchanger 11. The indoor air-sending device 12 blows out the air that has exchanged heat with the refrigerant in the indoor heat exchanger 11 from the air-outlet 22.
(blowout grille 30)
Fig. 5 is a perspective view showing the blowout grill 30 according to embodiment 1, and fig. 6 is a front view showing the blowout grill 30 according to embodiment 1. Fig. 7 is a top sectional view showing the blowout grill 30 according to embodiment 1. The outlet grill 30 may be directly connected to the casing 20 of the indoor unit 3, or may be indirectly connected to the casing 20 of the indoor unit 3 via a duct or the like. As shown in fig. 5 to 7, the louver device includes a pipe connecting surface 40, a housing 50, a louver motor 60, upper and lower louvers 70, side louvers 80, and a shielding portion 90 (see fig. 8).
(surface for pipe connection 40)
The duct connecting surface 40 is a plate-like member extending in the width direction, and is attached to the duct (not shown) when the casing 20 and the outlet grill 30 are connected via the duct. The pipe connecting surface 40 has a blow-out surface 41 and a flat surface 42. The discharge surface 41 is a portion facing the discharge port 22 of the casing 20 when connected to the casing 20, and a majority of the discharge surface is an opening 51. The blow-out surface 41 is a portion to which the housing 50 is attached. The flat surface 42 is provided on the side of the ejection surface 41 and is a flat portion where the opening 51 is not formed. An expansion unit (not shown) for expanding the function of the indoor unit 3 and the like are attached to the flat surface 42. In embodiment 1, the extension unit is not illustrated.
(frame 50)
The frame 50 is a frame-shaped decorative panel having an opening 51 through which air is blown, and is attached to the blowing surface 41 of the duct connecting surface 40. Here, the opening 51 has a rectangular parallelepiped shape. The upper portion of the frame 50 is chamfered so as to become thinner as the thickness thereof becomes higher. The lower portion of the frame 50 is chamfered so as to become thinner as it goes downward.
(Motor for louver boards 60)
The louver motor 60 is provided between the housing 50 and the pipe connecting surface 40 at one end of the housing 50, and rotationally drives the upper and lower louvers 70 and the side louvers 80. The louver motor 60 receives a signal or the like transmitted from a remote controller (not shown) or the like provided in the indoor unit 3, and rotationally drives the upper and lower louvers 70 and the side louvers 80 based on the received signal.
(Upper and lower square louver boards 70)
The vertical louvers 70 are elongated members that are provided in the opening 51 of the housing 50 at intervals in the vertical direction and extend in the width direction. The upper and lower louvers 70 are vertically swung about the width direction as an axis by driving the louver motor 60. The vertical louvers 70 control the vertical direction of travel of the air blown out from the outlet 22 of the casing 20 by the angle of swing.
(side louver 80)
The side louvers 80 are elongated members that are provided in the opening 51 of the housing 50 at intervals in the width direction and extend in the vertical direction. The side louvers 80 are swung in the width direction about the vertical axis by driving the louver motor 60. The side louvers 80 control the traveling direction of the air blown out from the outlet 22 of the casing 20 in the width direction by the angle of the swing.
(Shield portion 90)
Fig. 8 is a schematic view showing the side louver 80 and the shielding portion 90 according to embodiment 1. As shown in fig. 8, the shielding portion 90 protrudes from an end portion in the width direction of the opening 51 of the housing 50 toward the side louver 80. Specifically, the shielding portion 90 is provided between the end portion of the opening 51 of the housing 50 in the width direction and the upstream end 82 of the side louver 80. The shielding portion 90 is a plate-like member, and has an extending portion 91 and a tip portion 92. The extending portion 91 extends from the end in the width direction of the opening 51 of the housing 50 toward the side louver 80. The front end 92 projects forward of the frame 50 from the front end of the extension 91. Here, the downstream end 81 and the upstream end 82 of the side louver 80 will be explained. The downstream end 81 of the side louver 80 is an end portion on the downstream side of the air of the side louver 80 in the depth direction, and is an end portion on the opposite side to the rotation axis of the side louver 80. The upstream end 82 of the side louver 80 is an end portion on the upstream side of the air of the side louver 80 in the depth direction, and is integrated with the shaft on which the side louver 80 rotates.
According to embodiment 1, the shielding portion 90 blocks the air flowing through the end portion of the opening 51 of the housing 50 in the width direction. That is, the shielding portion 90 intentionally blocks a part of the air passage between the end portion in the width direction of the opening 51 of the housing 50 and the side louver 80. Therefore, the flow of the straight flow Y (see fig. 10) is suppressed at the end portion in the width direction of the opening 51 of the housing 50. Therefore, the straight flow Y collides with the airflow X controlled rearward by the side louver 80, and does not obstruct the airflow X controlled rearward by the side louver 80 from heading to the side. Thus, embodiment 1 improves the directivity of the airflow X in the direction rearward controlled by the side louvers 80.
Here, as shown in fig. 8, the interval between adjacent side louvers 80 is denoted by a, and the length between the upstream end 82 of the side louver 80 and the tip end of the extending portion 91 of the shielding portion 90 is denoted by B. In embodiment 1, the condition that B.gtoreq. 2/3. times.A is satisfied.
Fig. 9 is a distribution diagram showing the distribution of the airflow in embodiment 1. Fig. 9 is a calculation result obtained by numerically analyzing the wind speed distribution of the airflow. Here, the flow of air blown out from the blow-out grille 30, that is, the distribution of the airflow will be described. In fig. 9, the upper left diagram is a standard diagram of the blowout grill 130 of the comparative example 1 satisfying B ═ 1/3 × a. In fig. 9, the upper right column is an enlarged view of the blowout grill 130 of the comparative example 1 satisfying B ═ (1/3) × a. In fig. 9, the diagram in the lower left column is a standard diagram of the blowout grill 30 of embodiment 1 that satisfies B ═ (2/3) × a. In fig. 9, the lower right-hand column is an enlarged view of the blowout grill 30 of embodiment 1 satisfying B ═ 2/3 × a. In all the drawings of fig. 9, the upper side is the rear side of the blowout grill 30, and the lower side is the front side of the blowout grill 30.
As shown in fig. 9, in the case of the blowout grill 130 of comparative example 1 in which B is (1/3) × a, the widths of the shielding portion 90 and the side louvers 80 are too narrow. Thus, during the cooling operation, warm air, which is secondary air trapped in the room, flows into between the shielding portion 90 and the side louvers 80. Thus, the warm air collides with the side louvers 80 cooled by the cooling operation, and condensation may occur on the surfaces of the side louvers 80.
In contrast, as shown in fig. 9, in the case of the blowout grill 30 according to embodiment 1 that satisfies B ═ (2/3) × a, the widths of the shielding portion 90 and the side louvers 80 are slightly wider. Accordingly, during the cooling operation, since the airflow flows along the side louvers 80, the warm air, which is the secondary air in the room, is not involved, and the warm air does not flow between the shielding portion 90 and the side louvers 80. In embodiment 1, since B is equal to or greater than (2/3) × a, condensation on the side louvers 80 during the cooling operation can be suppressed.
Fig. 10 is a schematic view showing a side louver 80 of comparative example 2. As shown in fig. 10, the blowing grille 230 of comparative example 2 does not have the shielding portion 90. In this case, the airflow at the end in the width direction of the opening 51 of the housing 50 becomes the straight airflow Y. In comparative example 2, the straight flow Y collides with the airflow in the direction from the vertical-vane control, and the airflow in the direction from the vertical-vane control may be blocked from being directed to the side.
In contrast, as shown in fig. 8, the outlet grill 30 of embodiment 1 includes a shielding portion 90. The shielding portion 90 blocks air flowing at the end portion in the width direction of the opening 51 of the housing 50. That is, the shielding portion 90 intentionally blocks a part of the air passage between the end portion in the width direction of the opening 51 of the housing 50 and the side louver 80. The flow of the straight flow Y is thus suppressed at the end in the width direction of the opening 51 in the housing 50. Therefore, the straight flow Y collides with the airflow X controlled to the rear by the side louver 80, and does not obstruct the airflow X controlled to the rear by the side louver 80 to face to the side.
The distance A and the length B between the upstream end 82 of the side louver 80 and the shielding portion 90 satisfy the condition that B is equal to or greater than (2/3). times.A. As a result, as shown in fig. 9, during cooling operation, since the airflow flows along the side louvers 80, the warm air, which is the secondary air in the room, is not entrained, and the warm air does not flow between the shielding portion 90 and the side louvers 80. Therefore, condensation of the side louvers 80 during the cooling operation can be suppressed.
Further, the shielding portion 90 includes: an extending portion 91 extending from an end portion in the width direction of the opening 51 of the housing 50 toward the side louver 80, and a front end portion 92 protruding from a front end of the extending portion 91 toward the front of the housing 50. In this way, since the distal end portion 92 protrudes from the distal end of the extending portion 91 toward the front of the housing 50, the flow of air between the distal end portion 92 and the side louvers 80 is guided as shown in fig. 8.
Description of the reference numerals
An air conditioning apparatus; an outdoor unit; an indoor unit; a refrigerant circuit; refrigerant tubing; a compressor; a flow path switching device; an outdoor heat exchanger; an outdoor blower; an expansion portion; an indoor heat exchanger; an indoor blower; a motor; a fan; a housing; a suction inlet; an air outlet; blowing out a grid; a pipe connection face; blowing out the noodles; a flat face; a frame body; an opening; a motor for a blind slat; upper and lower louvres; 80.. side slats; a downstream end; 82... upstream end; 90.. a shield; an extension; 92.. a front end portion; blowing out a grille; blow out a grille; a gas stream; a direct current.
Claims (5)
1. A blowout grill is provided with:
a frame body having an opening through which air is blown;
a plurality of side louvers which are provided at intervals in the width direction of the opening of the housing, extend in the vertical direction, and swing in the width direction with the vertical direction as an axis; and
and a shielding portion that protrudes from an end portion in the width direction of the opening of the housing toward the side louver.
2. A blowout grill according to claim 1,
the distance A and the length B between the upstream end of the side louver and the shielding part satisfy the condition that B is not less than (2/3) multiplied by A.
3. A blowout grill according to claim 1 or 2,
the shielding part has:
an extension portion extending from an end portion in a width direction of the opening of the housing toward the side louver; and
and a front end portion protruding from a front end of the extension portion toward a front of the housing.
4. An indoor unit, characterized by being provided with:
a casing having an indoor heat exchanger for exchanging heat between a refrigerant and air, and an indoor air blower for sending air to the indoor heat exchanger, and having an outlet through which air is blown by the indoor air blower; and
the blowout grill of any one of claims 1 to 3, which is provided to the blowout port of the housing.
5. An air conditioning apparatus is characterized by comprising:
the indoor unit of claim 4; and
an outdoor unit connected to the indoor unit by a pipe, and including: the air conditioner includes a compressor that compresses a refrigerant, an outdoor heat exchanger that exchanges heat between the refrigerant compressed by the compressor and air, and an expansion unit that expands the refrigerant heat-exchanged by the outdoor heat exchanger.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/JP2019/030559 WO2021024317A1 (en) | 2019-08-02 | 2019-08-02 | Outlet grill, indoor unit, and air conditioning device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114144623A true CN114144623A (en) | 2022-03-04 |
Family
ID=74502870
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201980097640.XA Pending CN114144623A (en) | 2019-08-02 | 2019-08-02 | Blow-out grille, indoor unit, and air conditioning device |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP7209844B2 (en) |
| CN (1) | CN114144623A (en) |
| WO (1) | WO2021024317A1 (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169245A (en) * | 1987-12-25 | 1989-07-04 | Matsushita Refrig Co Ltd | Ceiling embedded type air conditioner |
| CN1296561A (en) * | 1998-03-30 | 2001-05-23 | 大金工业株式会社 | Air intake and blowing device |
| JP4544364B1 (en) * | 2009-04-17 | 2010-09-15 | ダイキン工業株式会社 | Air conditioner |
| CN108758836A (en) * | 2018-08-24 | 2018-11-06 | 珠海格力电器股份有限公司 | Air conditioner room unit and air conditioner with it |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60202248A (en) * | 1984-03-27 | 1985-10-12 | Nissan Motor Co Ltd | Ventilator |
-
2019
- 2019-08-02 WO PCT/JP2019/030559 patent/WO2021024317A1/en active Application Filing
- 2019-08-02 JP JP2021538539A patent/JP7209844B2/en active Active
- 2019-08-02 CN CN201980097640.XA patent/CN114144623A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01169245A (en) * | 1987-12-25 | 1989-07-04 | Matsushita Refrig Co Ltd | Ceiling embedded type air conditioner |
| CN1296561A (en) * | 1998-03-30 | 2001-05-23 | 大金工业株式会社 | Air intake and blowing device |
| JP4544364B1 (en) * | 2009-04-17 | 2010-09-15 | ダイキン工業株式会社 | Air conditioner |
| CN108758836A (en) * | 2018-08-24 | 2018-11-06 | 珠海格力电器股份有限公司 | Air conditioner room unit and air conditioner with it |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021024317A1 (en) | 2021-02-11 |
| JPWO2021024317A1 (en) | 2021-12-16 |
| JP7209844B2 (en) | 2023-01-20 |
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