CN108072107B - Indoor unit of wall-mounted air conditioner - Google Patents

Indoor unit of wall-mounted air conditioner Download PDF

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Publication number
CN108072107B
CN108072107B CN201711048323.8A CN201711048323A CN108072107B CN 108072107 B CN108072107 B CN 108072107B CN 201711048323 A CN201711048323 A CN 201711048323A CN 108072107 B CN108072107 B CN 108072107B
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CN
China
Prior art keywords
air
wall
air supply
centrifugal fan
heat exchange
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Active
Application number
CN201711048323.8A
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Chinese (zh)
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CN108072107A (en
Inventor
李英舒
单翠云
王永涛
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Qingdao Haier Air Conditioner Gen Corp Ltd
Original Assignee
Qingdao Haier Air Conditioner Gen Corp Ltd
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Priority to CN201711048323.8A priority Critical patent/CN108072107B/en
Publication of CN108072107A publication Critical patent/CN108072107A/en
Application granted granted Critical
Publication of CN108072107B publication Critical patent/CN108072107B/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
    • F24F1/0007—Indoor units, e.g. fan coil units
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0022—Centrifugal or radial fans
    • 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
    • F24F1/0018—Indoor units, e.g. fan coil units characterised by fans
    • F24F1/0033—Indoor units, e.g. fan coil units characterised by fans having two or more fans
    • 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
    • F24F13/02—Ducting arrangements
    • F24F13/06—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
    • F24F13/072—Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser of elongated shape, e.g. between ceiling panels
    • 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
    • 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
    • F24F13/32—Supports for air-conditioning, air-humidification or ventilation units

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning Room Units, And Self-Contained Units In General (AREA)

Abstract

The invention provides a wall-mounted air conditioner indoor unit, which comprises: the shell is provided with a housing and a front panel, wherein air inlets are respectively formed in two sides of the housing, an oblong air supply opening is formed in the front panel, and the shell is obliquely downwards arranged relative to the supporting wall body so that the air supply opening faces obliquely downwards; the heat exchanger is arranged in the shell and is close to the front panel, and the position of the heat exchanger is communicated with the air inlet; the air injection component is arranged in the air supply opening and is used for jetting heat exchange air flow in the air injection component forwards and driving ambient air to be sent out obliquely downwards, and the first air supply component and the second air supply component are transversely arranged in the shell at intervals and are respectively used for generating heat exchange air flow which enters the heat exchanger from the air inlets at two sides and then is supplied to the air injection component. The scheme increases the air supply quantity and leads the indoor temperature to be wholly and uniformly reduced.

Description

Indoor unit of wall-mounted air conditioner
Technical Field
The invention relates to an air conditioner, in particular to an indoor unit of a wall-mounted air conditioner.
Background
The air conditioner is one of the necessary household appliances, and along with the increasing requirements of users on comfort and health, the air supply mode of the traditional air conditioner is to send cold air indoors, then the cold air is slowly convected with ambient air, the heat exchange speed is slower, people cannot feel cool rapidly, the air supply port of the indoor unit directly blows the people, adverse effects can be brought to the health of the users, and air conditioning diseases are easy to occur.
To this problem, the indoor unit of the spraying air outlet of soft air supply appears in the prior art, and it utilizes less air outlet to drive the surrounding air and blows out for the air after the heat transfer is mixed with the surrounding air and is sent out, however the requirement of spraying air outlet to the structure is higher, makes the spraying air outlet be applied to in the comparatively abundant cabinet indoor unit in space mostly. The hanging type indoor unit using the jet outlet often needs to set the casing to be round or in other irregular shapes in order to meet the structural requirement of the jet outlet, so that on one hand, the hanging type indoor unit has a gap with the use habit of a user and the existing cognition of the hanging type indoor unit, and is not easy to accept by the user; on the other hand, the occupied space is large, and the trouble is brought to the installation of the hanging type indoor unit, so that the hanging type indoor unit using the jet air outlet cannot meet the use requirement of a user.
Disclosure of Invention
The invention aims to provide a wall-mounted air conditioner indoor unit with soft air supply and high heat exchange speed.
A further object of the present invention is to provide a wall-mounted air conditioner indoor unit that is compact and compatible with the use habits of users.
It is a further object of the present invention to provide a wall-mounted air conditioner that is capable of providing uniform airflow from the air jet unit of the wall-mounted air conditioner.
In particular, the present invention provides a wall-mounted air conditioner indoor unit, comprising:
the shell comprises a housing and a front panel arranged in front of the housing, air inlets are respectively formed in two sides of the housing, an oblong air supply opening is formed in the front panel, and the shell is arranged obliquely downwards relative to a supporting wall body for fixing the indoor unit of the wall-mounted air conditioner so that the air supply opening faces obliquely downwards;
the heat exchanger is arranged in the shell and close to the front panel, and the position of the heat exchanger is communicated with the air inlet;
the air injection component is arranged in the air supply opening, an air injection opening is formed in the inner peripheral wall of the air injection component, and is used for injecting heat exchange air flow in the air injection component forwards and driving ambient air in an air suction hole defined by the inner peripheral wall of the air injection component to be sent out obliquely downwards, and the air suction hole is communicated with the surrounding environment at the upstream of the air supply direction;
the first air supply assembly and the second air supply assembly are transversely arranged in the shell at intervals, wherein the first air supply assembly is used for generating first heat exchange airflow which enters from an air inlet at one side and is supplied to the air injection component after heat exchange with the heat exchanger; the second air supply assembly is used for generating second heat exchange air flow which enters from the air inlet at the other side and is supplied to the air injection component after exchanging heat with the heat exchanger.
Optionally, the wall-mounted air conditioner indoor unit further includes: one end of the fixing frame is fixedly connected with the back of the housing, and the other end of the fixing frame is used for being fixed on the supporting wall; and at least a part of the lower edge of the back of the housing forms a chamfer so as to be attached to the supporting wall body by the chamfer after the fixing frame is fixed with the supporting wall body, thereby supporting the indoor unit.
Optionally, the housing is arranged with an inclination angle in the range of 5 to 30 degrees relative to the wall.
Optionally, the air injection component includes an annular inner wall and an annular outer wall, wherein the annular inner wall defines an air exhaust hole on the inner side, the annular outer wall and the annular inner wall together define an air supply cavity, and edges of the annular outer wall connected with the annular inner wall form air injection ports, the annular outer wall is provided with a first air inlet and a second air inlet for receiving heat exchange air flow on two transverse ends respectively, and
the first air supply assembly is connected with the first air inlet so as to supply first heat exchange air flow to the air supply cavity through the first air inlet, and the second air supply assembly is connected with the second air inlet so as to supply second heat exchange air flow to the air supply cavity through the second air inlet.
Optionally, the rear side edge of the annular inner wall is recessed into the air supply chamber, and the annular outer wall has an outward flange at a position opposite to the rear side edge of the annular inner wall, so that a gap between the annular outer wall and the rear side edge of the annular inner wall forms an air jet; and is also provided with
The annular inner wall extending forwardly from its rear side edge to form a continuous outwardly expanding coanda surface; the section of the part of the annular outer wall positioned at the rear side of the air injection component is spiral, so that the air flow of the air supply cavity is sent out along the coanda surface formed by the annular inner wall after being sprayed out from the air injection port along the annular outer wall, and the air supply cavity is driven to draw out the ambient air behind the air supply port.
Optionally, the air injection component comprises two spaced horizontal sections and two arc sections connected with the two horizontal sections, so that the air injection component integrally forms an oblong shape matched with the air supply outlet, and the annular outer walls of the two arc sections are respectively provided with a first air inlet and a second air inlet.
Optionally, the wall-mounted air conditioner indoor unit further includes: the center of the partition board is recessed backwards to define a heat exchanger accommodating cavity for arranging the heat exchanger with the front panel, and the two sides of the partition board form backwards turned edges, and the air inlet is formed at a position opposite to the turned edges, so that the turned edges of the partition board and the side wall of the housing define an air inlet channel from the air inlet to the heat exchanger accommodating cavity.
Optionally, the partition plate is further provided with a first through hole and a second through hole which are laterally spaced apart, and the first air supply assembly includes: the air collection port of the first centrifugal fan penetrates out of the first through hole to suck air from the heat exchanger accommodating cavity to form first heat exchange air flow; the first air guide component is connected between the air outlet and the first air inlet of the first centrifugal fan so as to guide the air flow discharged by the first centrifugal fan into the air supply cavity;
The second air supply assembly includes: the second centrifugal fan is used as a power source of second heat exchange airflow, the impeller and the volute of the second centrifugal fan are also arranged in a space defined by the partition plate and the housing, the exhaust port of the volute of the second centrifugal fan faces the side wall of the housing on one side of the second air inlet, the exhaust port of the volute of the second centrifugal fan is connected with the air inlet of the second air guide component, and the air collecting port of the second centrifugal fan penetrates out from the second through hole to suck air from the heat exchanger accommodating cavity to form second heat exchange airflow; the second air guide component is connected between the exhaust port and the second air inlet of the second centrifugal fan so as to guide the air flow exhausted by the second centrifugal fan into the air supply cavity.
Optionally, the air supply port is laterally disposed at an upper portion of the front panel, and the first air guiding member includes: the first diversion section is provided with an air inlet of the first air guide component, at least part of the first diversion section is in a spiral shape, and the air flow direction exhausted by the first centrifugal fan is guided upwards; the first air supply section is connected with the first drainage section, a first air collection cavity is defined in the first air supply section and used for receiving air flow discharged by the first centrifugal fan, and a first air outlet connected with the first air inlet is formed in the first air supply section so that the air flow of the first air collection cavity is supplied to the air supply cavity; and is also provided with
The second air guiding member includes: the second diversion section is provided with an air inlet of the second air guide component, at least part of the second diversion section is in a spiral shape, and the air flow direction discharged by the second centrifugal fan is guided upwards; the second air supply section is connected with the second drainage section, and a second air collection cavity is defined in the second air supply section and used for receiving air flow discharged by the second centrifugal fan, and a second air outlet connected with the second air inlet is formed in the second air supply section so that the air flow of the second air collection cavity is supplied to the air supply cavity.
Optionally, the first drainage section is gradually reduced from the air inlet of the first air guide component along the air flow direction, the first air supply section forms a volute shape along the air outlet direction of the first drainage section, and the wind resistance of the first heat exchange air flow in the first air collection cavity is reduced; and is also provided with
The second drainage section gradually tapers from the air inlet of the second air guide component along the air flow direction, the second air supply section forms a volute shape along the air outlet direction of the second drainage section, and the wind resistance of the second heat exchange air flow in the second air collection cavity is reduced.
The invention relates to a wall-mounted air conditioner indoor unit, which is characterized in that an oblong air supply opening is arranged on a shell and is used for arranging an annular air injection component, so that air flow passing through the heat exchange of a heat exchanger is sprayed out from the air injection opening of the air injection component, ambient air around the air supply opening is sucked and mixed with heat exchange air with severe ambient temperature difference, the sent air flow is ensured to be soft, the feeling of blowing to a human body is more comfortable, on one hand, the air supply amount is increased, the flow of indoor air is accelerated, the indoor temperature can be uniformly reduced, and the air supply opening of the wall-mounted air conditioner indoor unit is in an oblong runway shape, has an integral structure which is similar to that of the traditional wall-mounted air conditioner indoor unit, is easy to be approved by a user, accords with the use habit of the user, is easy to replace the traditional wall-mounted indoor unit, and the installation position is flexible.
Furthermore, the air inlets are respectively formed in the two sides of the housing, external air enters the heat exchanger accommodating cavity where the heat exchanger is located from the two sides, so that the smoothness of heat exchange air flow is ensured, the problem of ash falling of the upper opening is avoided, the structure of the indoor unit is more compact, the air before and after heat exchange is separated by the partition plate, and the whole shell is attractive. The air inlet direction is two sides, and the air supply direction is the forward direction, so that indoor air flow forms circulation, and the heat exchange efficiency is higher.
Furthermore, the shell of the wall-mounted air conditioner indoor unit is obliquely arranged relative to the supporting wall body, so that the air supply opening faces obliquely downwards, and the air outlet is large due to the adoption of the jet air outlet mode, so that the problem that the air supply air flow is far away from the same height when the air supply opening faces to the front side, but the convection degree in the height direction is insufficient is solved.
Further, the wall-mounted indoor unit is characterized in that two air supply assemblies are arranged in the shell, and the air supply assemblies respectively provide heat exchange air flow for the air supply cavities of the air injection components to the air inlets (the first air inlet and the second air inlet) arranged on two sides of the air injection components and finally spray out from the air injection ports, and the two air supply assemblies are matched with each other to supply air together, so that the air flow in the air supply cavities is more uniform, the air outlet at each position of the air injection ports is uniform, the surrounding air can be uniformly driven, the stability and the uniformity of the air supply are further improved, and the use experience of users is further improved. In addition, under some special working conditions, the two air supply assemblies can be matched with each other to supply air together, and can be controlled independently according to the working conditions, for example, the two air supply assemblies can supply air according to the same air quantity at the same time; respectively supplying air according to different air volumes; the air supply is started alternatively, so that the air outlet of the indoor unit meets the requirements of different working conditions, the control is more flexible, and the different requirements of users are met.
Furthermore, the wall-mounted air conditioner indoor unit has compact internal component structure, fully utilizes the space in the shell and can make the wall-mounted air conditioner indoor unit thinner.
Furthermore, the indoor unit of the wall-mounted air conditioner improves the positions and the structures of the heat exchanger, the centrifugal fan, the air guide component and the like, so that the occupied space is reduced, and the air supply wind resistance is reduced.
The above, as well as additional objectives, advantages, and features of the present invention will become apparent to those skilled in the art from the following detailed description of a specific embodiment of the present invention when read in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter by way of example and not by way of limitation with reference to the accompanying drawings. The same reference numbers will be used throughout the drawings to refer to the same or like parts or portions. It will be appreciated by those skilled in the art that the drawings are not necessarily drawn to scale. In the accompanying drawings:
fig. 1 is a schematic exterior view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
fig. 2 is an installation schematic diagram of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
Fig. 3 is a schematic exploded view of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
fig. 4 is a schematic view of an air injection unit in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
FIG. 5 is a front view of the air jet assembly shown in FIG. 4;
FIG. 6 is a schematic cross-sectional airflow diagram taken along section line A-A in FIG. 5;
fig. 7 is a schematic view of internal components of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention; and
fig. 8 is a schematic view illustrating a structure in which a first air blowing unit and a second air blowing unit blow air to an air blowing unit in an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention.
Detailed Description
In order to facilitate description, the directions of "up", "down", "front", "back", "top", "bottom", etc. mentioned in the description are defined according to the spatial positional relationship of the wall-mounted air conditioner indoor unit 100 in the normal working state, for example, the side of the wall-mounted air conditioner indoor unit 100 facing the user is the front, and the side that is attached to the mounting position is the rear.
Fig. 1 is a schematic exterior view of a wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention, fig. 2 is a schematic installation view of the wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention, and fig. 3 is a schematic exploded view of the wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 may generally include: the air-jet device comprises a shell 110, an air-jet component 120, a heat exchanger 140, a first air supply assembly and a second air supply assembly. Wherein the housing 110 may include: a housing 112, and a front panel 114 disposed in front of the housing 112. The casing 112 is formed of a top wall, side walls, and a rear back, which together define a space for accommodating the internal components of the wall-mounted air conditioner indoor unit 100, and the front panel 114 is disposed in front of the casing 112, thereby closing the internal space of the casing 112. The housing 110 is provided with an air inlet 116 and an air outlet 117. The air outlet 117 may be formed in an oblong shape and may be provided in the front panel 114 (generally in an upper portion of the front panel 114), and may communicate with the surrounding environment upstream in the air-supplying direction.
Air inlets 116 are respectively formed in the side walls of the two sides of the housing 112, and external ambient air can enter the indoor unit 100 from the two sides, so that the external ambient air can smoothly enter the heat exchanger accommodating cavity where the heat exchanger 140 is positioned for heat exchange, the smoothness of heat exchange air flow is ensured, and the air inlets 116 can be formed by gratings, meshes and the like. The arrangement structure of the air inlet 116 can ensure the integrity of the appearance and improve the aesthetic degree of the machine body. Compared with the prior art that the air inlet is generally arranged at the top, dust easily falls into the indoor unit in an idle state, the indoor unit 100 of the embodiment is provided with air inlets from two sides, and the air supply direction is forward, so that indoor air flow forms a cycle, the sent air flow is prevented from rapidly entering the indoor unit 100 again, the heat exchange efficiency is higher, the area of the air inlet area is large, and the problem of dust falling is avoided.
In some preferred embodiments, the air supply opening 117 may be disposed through the top of the housing 110 (e.g., oblong through holes are formed in the corresponding positions of the cover 112 and the front panel 114). Thereby forming the air supply opening 117 penetrating forward and backward.
The air injecting member 120 is provided in the air outlet 117, for example, at the upper part of the indoor unit 100, and the air injecting member 120 uses an air jet to circulate the air flow, with a long air supply distance. The wall-mounted air conditioner indoor unit is obliquely disposed, and the housing 110 is disposed obliquely downward with respect to the support wall 200 for fixing the wall-mounted air conditioner indoor unit such that the air supply opening 117 is oriented obliquely downward.
An installation mode of the wall-mounted air conditioner indoor unit is as follows: a fixing frame 160 for mounting the housing 110 is provided. One end of the fixing frame 160 is fixedly connected with the back of the housing 112, the other end is used for being fixed on the supporting wall 200, and the lower edge of the back of the housing 112 is also abutted against the supporting wall 200, so that a supporting structure of the housing 110 is formed. The fixing frame 160 may be an integral fixing plate or one or more hanging rods. One end of the fixing frame 160 fixedly supporting the wall 200 can be reliably fixedly connected by bolts and screws.
At least a portion of the lower edge of the back of the casing 112 is chamfered to fit the support wall using the chamfer 118 after the fixing frame 160 is fixed to the support wall 200, thereby supporting the indoor unit 100. For example, the lower edge of the back of the housing 112 is formed on both sides with a chamfer 118. In other embodiments, the lower edge of the back of the housing 112 may also be integrally formed with the chamfer 118.
The housing 110 is disposed at an inclination angle range of 5 to 30 degrees with respect to the wall 200. The inclination angle is determined by measuring and calculating according to the hanging height of the indoor unit 100 and the indoor environment, thereby better meeting the requirement of air flow circulation.
Since the housing 110 is inclined with respect to the wall 200, the upper portion of the casing 112 forms an air circulation area with respect to the wall 200, so that the supply port 117 is directly connected to the area, thereby being sucked therethrough to be mixed with the heat exchange air flow.
The heat exchanger 140 is disposed inside the housing 110 at a position close to the front panel 114, i.e., at the front of the inner space of the housing 110. The heat exchanger 140 exchanges heat with air flowing therethrough to change the temperature of the air flowing therethrough. The heat exchanger 140 is part of a refrigeration system that may be implemented using a compression refrigeration cycle that uses a refrigerant to transfer heat through a compression phase change cycle of a compressor, condenser, evaporator, and throttling device. The refrigeration system may also be provided with a four-way valve to change the flow direction of the refrigerant, so that the indoor heat exchanger 140 alternately serves as an evaporator or a condenser to realize a refrigeration or heating function. Since the compression refrigeration cycle in an air conditioner is well known to those skilled in the art, the operation principle and construction thereof will not be described herein. The heat exchanger 140 may be of the plate type, disposed against the front panel 114 of the housing 110.
The air injecting member 120 is disposed in the air outlet 117, has an overall oblong shape (or racetrack shape), and defines an air extracting hole 123 at the center of the air injecting member 120, and the air extracting hole 123 communicates with the surrounding environment upstream in the air supplying direction. The size and specification of the air injecting member 120 and its internal components may be set according to the air supplying capability of the first air supplying assembly and the second air supplying assembly.
Fig. 4 is a schematic view of the air injection unit 120 of the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention, fig. 5 is a front view of the air injection unit 120 shown in fig. 4, and fig. 6 is a schematic cross-sectional airflow direction view taken along a section line A-A in fig. 5. The air injecting part 120 includes an annular inner wall 121 and an annular outer wall 122, the annular inner wall 121 and the annular outer wall 122 together forming the above-mentioned oblong shape, and an air extracting hole 123 is provided inside the annular inner wall 121. The edge of the annular outer wall 122 that meets the annular inner wall 121 forms a jet 124, the jet 124 being adapted to jet the air flow of the air supply chamber 125 forward and to cause air in the rear of the air supply opening 117 to be drawn through the air supply opening 117.
The rear side edge 126 of the annular inner wall 121 is recessed inwardly of the air supply chamber 125, and the annular outer wall 122 has an outwardly turned edge 127 at a position opposite to the rear side edge 126 of the annular inner wall 121, so that a gap between the annular outer wall 122 and the rear side edge 126 of the annular inner wall 121 forms the air jet 124. The rear edge 126 of the annular inner wall 121 recessed toward the inside of the air supply chamber 125 may also have an air flow direction guiding effect so that the air flow in the air supply chamber 125 is smoothly sent out from the air nozzles 124.
The annular inner wall 121 extends forwardly from its rear side edge 126 to form a continuous outwardly expanding coanda surface; and the section of the part of the annular outer wall 122 located at the rear side of the air injection part 120 is spiral, so that the air flow of the air supply cavity 125 is sent out along the coanda surface formed by the annular inner wall 121 after being ejected from the air injection port 124 along the annular outer wall 122, and the ambient air behind the air supply port 117 is drawn out. The expansion inclination angle of the annular inner wall 121 extending forward and continuously expanding outward may be 5 to 15 degrees, and the larger the inclination angle is, the faster the expansion speed of the air flow ejected from the air jet 124 is, through a great amount of tests, the expansion inclination angle of the annular inner wall 121 may be set between 6 and 10 degrees, so that the mixing with the ambient air in the air suction hole 123 is more facilitated.
The annular inner wall 121 and the annular outer wall 122 together define an annular air supply chamber 125 inside the air injection member 120, and the lateral two ends of the annular outer wall 122 are respectively provided with a first air inlet 1291 and a second air inlet 1292 for providing air flow after heat exchange by the heat exchanger 140 to the air supply chamber 125.
In some alternative embodiments, the air injection component 120 may be in an overall shape of an oblong circle, the annular inner wall 121 and the annular outer wall 122 respectively have two spaced horizontal sections 128 and two arc sections 129 connecting the two horizontal sections 128, wherein the annular outer wall 122 in the two arc sections 129 is respectively provided with a first air inlet 1291 and a second air inlet 1292 of the air injection component 120 for receiving the air flow provided by the first air supply assembly and/or the second air supply assembly after heat exchange.
The above-described sections of the annular inner wall 121 and the annular outer wall 122 are formed of a plurality of connected components, and in some preferred embodiments, the annular inner wall 121 and the annular outer wall 122 may be formed of a unitary molded piece.
In some alternative embodiments, a wind deflector (not shown) may be disposed in the air supply chamber 125 to divide the air supply chamber 125 into two chambers, wherein one chamber is in communication with the first air inlet 1291 for receiving the first heat exchange air flow from the first air supply assembly and the other chamber is in communication with the second air inlet 1292 for receiving the second heat exchange air flow from the second air supply assembly. Thereby, the first air supply assembly and the second air supply assembly can be prevented from being affected with each other. The first air supply subassembly and second air supply subassembly can cooperate each other to realize the air supply, and both can start simultaneously, can start alone, and the mode of operation of first air supply subassembly and second air supply subassembly can include: the two air supply assemblies operate at the same air speed, the two air supply assemblies operate at different air speeds, the first air supply assembly operates independently, the second air supply assembly operates alternately, and therefore the effect similar to that of left and right air swinging is achieved, and balanced operation of internal components of the indoor unit 100 is guaranteed.
The gas jets 124 may be continuous annular grooves, and in some alternative embodiments, the gas jets 124 may be formed on a portion of the annular inner wall 121 and the annular outer wall 122, or in spaced apart segments. For example, the air jets 124 may be disposed only on the horizontal section 128 of the air jet assembly 120 so that the air jet is more uniform and may effectively entrain ambient air within the air extraction holes 123. In order to increase the jet velocity of the jet port 124, the width of the jet port 124 may be set to 1 to 3mm, and through a great number of tests, the width of the jet port 124 may be preferably set to about 2mm, and the jet port 124 with the width of the size not only can ensure the jet velocity of the heat exchange air flow, but also can reduce the windage loss of the heat exchange air flow as much as possible and reduce noise. In fig. 6, the solid arrows indicate the air flow direction of the ambient air, and the broken arrows indicate the air flow direction of the heat exchange air flow ejected from the air ejection ports 124.
In some preferred embodiments, the air injection component 120 may also be driven by a motor and a transmission mechanism to achieve overall up-and-down swing, adjust the air supply angle, and achieve swing air supply, thereby making the air-out range wider.
The first air supply assembly and the second air supply assembly are transversely arranged in the shell 110 at intervals and are positioned at the rear of the heat exchanger 140, wherein the first air supply assembly and the second air supply assembly are arranged at the rear of the inner space of the shell 110, and the first air supply assembly is used for generating a first heat exchange air flow entering from the air inlet 116 at one side and being supplied into the air supply cavity 125 through the first air inlet 1291 after exchanging heat with the heat exchanger 140; the second air supply assembly is configured to generate a second heat exchange air flow entering from the air inlet 116 at the other side, exchanging heat with the heat exchanger 140, and then being supplied to the air supply cavity 125 through the second air inlet 1292.
The first air supply assembly and the second air supply assembly are symmetrically arranged with the center of the heat exchanger 140, and supply air to the first air inlet 1291 and the second air inlet 1292 at both sides of the air injection member 120, respectively.
The first air supply assembly includes: the first centrifugal fan 131 and the first air guide 136. The first centrifugal fan 131 is used as a power source for the flow of the first heat exchange airflow, and may be configured such that ambient air enters from the air inlet 116 and exchanges heat with the heat exchanger 140, is discharged downstream through the first centrifugal fan 131, and finally enters the air supply cavity 125 through the first air inlet 1291 and is sent out of the indoor unit 100 through the air jet 124. The first air guiding component 136 is connected between the air outlet of the first centrifugal fan 131 and the first air inlet 1291 of the air injecting component 120, and is used for guiding the air flow discharged by the first centrifugal fan 131 into the air supplying cavity 125.
The second air supply assembly includes: the second centrifugal fan 151 and the second air guide 156. The second centrifugal fan 151 is used as a power source for the second heat exchange airflow to flow, and may be configured such that ambient air enters from the air inlet 116 and exchanges heat with the heat exchanger 140, is discharged downstream through the second centrifugal fan 151, and finally enters the air supply cavity 125 through the second air inlet 1292, and then the air injection component 120 sends out the air outside the indoor unit 100. The second air guiding member 156 is connected between the air outlet of the second centrifugal fan 151 and the second air inlet 1292 of the air injecting member 120, and is used for guiding the air flow discharged from the second centrifugal fan 151 into the air supplying cavity 125.
Fig. 7 is a schematic diagram of internal components of a wall-mounted air conditioner indoor unit 100 according to one embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 further includes a partition 143 inside, and the partition 143 is used for isolating the air flow before and after heat exchange. The center of the partition 143 is recessed rearward to define a heat exchanger accommodating chamber for disposing the heat exchanger 140 with the front panel 114, and both sides of the partition 143 are formed with rearward flanges 1433, and the air intake 116 is opened at a position opposite to the flanges 1433, so that the flanges 1433 of the partition 143 and the side wall of the housing 112 define an air intake passage from the air intake 116 to the heat exchanger accommodating chamber. The heat exchanger 140 is disposed in the heat exchanger accommodating chamber.
After the external air enters from the air inlets 116 at the two sides, the external air enters the accommodating cavity of the heat exchanger along the space defined by the flange 1433, and exchanges heat with the heat exchanger 140.
The air inlet 116 is only communicated with the heat exchanger accommodating cavity, and can be formed by one or more grids, so that a part of external air transversely enters the heat exchanger accommodating cavity from the side wall and exchanges heat with the heat exchanger 140, on one hand, the area of the air inlet 116 is enlarged, and the smoothness of heat exchange air flow is improved; on the other hand, air is supplied to the heat exchanger accommodating chambers from two sides, so that heat exchange balance of the heat exchanger 140 can be ensured.
The center of the partition 143 (the middle of the portion recessed rearward) is provided with a first through hole 145 through which the first air collecting port 132 of the first centrifugal fan 131 passes, and a second through hole 146 through which the second air collecting port 152 of the second centrifugal fan 151 passes. The first and second centrifugal fans 131 and 151 suck air in the heat exchanger accommodating chamber to exchange heat with the heat exchanger 140, thereby forming first and second heat exchange airflows, respectively. The first impeller 133 and the first volute 134 of the first centrifugal fan 131 are disposed in a space defined by the partition 143 and the casing 112, and an exhaust port of the first volute 134 faces a side wall of the housing 110; the inlet of the first air guide 136 is connected to the outlet of the first volute 134.
Similarly, the second impeller 153 and the second scroll 154 of the second centrifugal fan 151 are disposed in the space defined by the partition 143 and the casing 112, and the exhaust port of the second scroll 154 is directed toward the side wall of the other side of the housing 110; the inlet of the second air directing member 156 is connected to the outlet of the second volute 154.
Fig. 8 is a schematic diagram illustrating a structure in which a first air supply unit and a second air supply unit supply air to an air injection unit 120 in a wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The first air supply assembly includes: first centrifugal fan 131 and first wind-guiding part 136, the second air supply subassembly includes: the second centrifugal fan 151 and the second air guide 156. In order to ensure the air jet speed of the air jet member 120, the first air supply assembly and the second air supply assembly of this embodiment both use centrifugal fans as power sources for heat exchange air flow.
The first centrifugal fan 131 accelerates the gas according to the principle that kinetic energy is converted into potential energy by using the first impeller 133 rotating at a high speed, and then decelerates and changes the flow direction, so that the kinetic energy is converted into potential energy. The first centrifugal fan 131 generally includes a first air collection port 132, a first impeller 133, and a first volute 134. The first air collecting port 132 of the first centrifugal fan 131 is used to ensure that the air flow can uniformly fill the inlet interface of the first impeller 133, so as to reduce the flow loss, in this embodiment, the first air collecting port 132 of the first centrifugal fan 131 tapers towards the first impeller 133, forming a flare, and the air exchanging heat with the heat exchanger 140 in the heat exchanger accommodating cavity can be sucked into the first impeller 133 as much as possible. When the first impellers 133 of the first centrifugal fan 131 are driven by the first high-speed motor 135 to rotate along with the shaft, gas between the first impellers 133 rotates along with the first impellers 133 to obtain centrifugal force, the gas is thrown out of the first impellers 133 and enters the first volute 134, and the gas pressure increase in the first volute 134 is guided to be discharged. After the air between the blades is exhausted, negative pressure is formed; the heat exchanger 140 air in the heat exchanger receiving chamber outside the first air collecting port 132 is continuously sucked to form a continuous air flow.
The first impeller 133 and the first volute 134 of the first centrifugal fan 131 are disposed in a space defined by the partition 143 and the casing 112, and an exhaust port of the first volute 134 faces a side wall of the casing 110 on the first air inlet 1291 side; the inlet of the first air guide 136 is connected to the outlet of the first volute 134. The first scroll 134 is spirally shaped, and sucks up air thrown out from the first impeller 133, and converts the dynamic pressure of the air flow into static pressure by the gradually widening sectional area.
The first air guiding component 136 is connected between the air outlet of the first centrifugal fan 131 and the first air inlet 1291, and is used for guiding the air flow discharged by the first centrifugal fan 131 into the air supply cavity 125. The first wind guide component 136 may include a first drainage section 137 and a first wind supply section 138.
The first drainage segment 137 has an air inlet of the first air guiding component 136, and at least part of the segment body of the first drainage segment 137 is spiral to guide the air flow direction discharged by the first centrifugal fan 131 upwards, and the first drainage segment 137 tapers from the air inlet of the first air guiding component 136 along the air flow direction, so that the air speed of the air flow entering the first air collecting cavity 139 of the first air supplying segment 138 is increased.
The first air supply section 138 is connected to the first drainage section 137, and defines a first air collecting chamber 139 therein to receive the air flow discharged from the first centrifugal fan 131, and the first air supply section 138 is provided with a first air inlet 1291, so that the air flow of the first air collecting chamber 139 is supplied to the air supply chamber 125. The first air supply section 138 forms a volute shape along the air outlet direction of the first drainage section 137, reduces the wind resistance of the air flow in the first air collection cavity 139, enables the air flow to form vortex in the first air collection cavity 139, and can smoothly lead to the air supply cavity 125 from the first air collection cavity 139.
The first drainage section 137 may be disposed at one side of the first centrifugal fan 131, and because of the space limitation of the partition 143, the front-rear distance of the first drainage section 137 is smaller, and the first air supply section 138 is located below the heat exchanger accommodating chamber (i.e. below the partition 143 and the heat exchanger 140), so that the distance in the front-rear direction is greater than that of the first drainage section 137, and the air outlet of the first air supply section 138 is disposed at the front of the first air collecting chamber 139 adjacent to the air injection member 120. The first air inlet 1291 of the air jet assembly 120 is disposed on the annular outer wall 122 of the arcuate section 129 on the side of the first air guide assembly 136 of the two arcuate sections 129.
The structure of the second air supply assembly is identical to that of the first air supply assembly. Specifically, the second centrifugal fan 151 generally includes a second gas collection port 152, a second impeller 153, and a second volute 154. The second air collecting port 152 of the second centrifugal fan 151 serves to ensure that the air flow uniformly fills the inlet interface of the second impeller 153, reducing flow losses. The second air collecting port 152 of the second centrifugal fan 151 tapers towards the second impeller 153 to form a bell mouth, so that air exchanging heat with the heat exchanger 140 in the heat exchanger accommodating cavity can be sucked into the second impeller 153 as much as possible. When the second impeller 153 of the second centrifugal fan 151 is driven by the second high-speed motor 155 to rotate along with the shaft, gas between the second impellers 153 rotates along with the second impeller 153 to obtain centrifugal force, the gas is thrown out of the second impeller 153 and enters the second volute 154, and the gas pressure increase in the second volute 154 is guided and discharged. After the air between the blades is exhausted, negative pressure is formed; the heat exchanger 140 air in the heat exchanger receiving chamber outside the second air collecting port 152 is continuously sucked to form a continuous air flow.
The second impeller 153 and the second scroll 154 of the second centrifugal fan 151 are disposed in a space defined by the partition 143 and the casing 112, and an exhaust port of the second scroll 154 faces a side wall of the housing 110 on the second air inlet 1292 side; the inlet of the second air directing member 156 is connected to the outlet of the second volute 154. The second scroll 154 is formed in a spiral shape, and sucks up air thrown from the second impeller 153 and converts a dynamic pressure of the air flow into a static pressure by a widened sectional area.
The second air guiding member 156 is connected between the air outlet of the second centrifugal fan 151 and the second air inlet 1292, and is used for guiding the air flow discharged from the second centrifugal fan 151 into the air supply cavity 125. The second air guide member 156 may include a second drainage section 157 and a second air supply section 158.
The second drainage section 157 has an air inlet of the second air guiding member 156, and at least a part of the second drainage section 157 is spirally formed to guide the air flow direction discharged from the second centrifugal fan 151 upward, and the second drainage section 157 is tapered from the air inlet of the second air guiding member 156 in the air flow direction, thereby accelerating the air speed of the air flow entering the second air collecting chamber 159 of the second air supplying section 158.
The second air supply section 158 is connected with the second drainage section 157, and defines a second air collection cavity 159 therein to receive the air flow discharged from the second centrifugal fan 151, and the second air supply section 158 is provided with an air inlet 1292 facing the second air inlet, so that the air flow of the second air collection cavity 159 is supplied to the air supply cavity 125. The second air supply section 158 forms a volute shape along the air outlet direction of the second drainage section 157, so that the wind resistance of the air flow in the second air collection cavity 159 is reduced, the air flow forms vortex in the second air collection cavity 159, and the air flow can smoothly pass from the second air collection cavity 159 to the air supply cavity 125.
The second flow guiding section 157 may be disposed at one side of the second centrifugal fan 151, and the front-rear distance of the second flow guiding section 157 is smaller due to the space limitation of the partition 143, and the second air supplying section 158 is disposed below the heat exchanger accommodating chamber (i.e., below the partition 143 and the heat exchanger 140), so that the front-rear distance thereof is greater than the second flow guiding section 157, and the air outlet of the second air supplying section 158 is disposed at the front of the second air collecting chamber 159 adjacent to the side of the air injecting part 120. The second air inlets 1292 of the air jet units 120 are respectively disposed on the annular outer wall 122 of the arc-shaped section 129 located on one side of the second air guiding member 156 of the two arc-shaped sections 129.
The first air supply assembly and the second air supply assembly are mutually matched and supply air together, so that air flow in the air supply cavity 125 is more uniform, air outlets at the positions of the air nozzles 124 are uniform, surrounding air can be uniformly driven, and the stability and uniformity of air supply are further improved.
In addition, under some special working conditions, the first air supply assembly and the second air supply assembly can be started alternatively or with different wind power, so that the air outlet meets the requirements of the special working conditions, and the control is more flexible. For example, when the temperature difference between the ambient temperature and the set temperature is small, or the user sets to send air in a low-wind mode, one of the first air-sending component and the second air-sending component can be selected to be started, and two air-sending components do not need to be started at the same time; in addition, the first air supply assembly and the second air supply assembly can be alternately started, so that the effect similar to the effect of swinging air is achieved. In addition, a wind shield may be disposed in the air supply cavity 125 to divide the air supply cavity 125 into two chambers, wherein one chamber is communicated with the first air inlet 1291 and is used for receiving the first heat exchange air flow from the first air supply assembly, and the other chamber is communicated with the second air inlet 1292 and is used for receiving the second heat exchange air flow from the second air supply assembly.
Because the first air supply assembly and the second air supply assembly supply air to the air injection component 120 together, the control mode is more flexible and convenient, the air supply requirements of different working conditions can be met, and the use experience of a user is greatly improved.
The air supply opening 117 of the wall-mounted air conditioner indoor unit 100 of this embodiment is used for arranging the annular air injection component 120, so that the air flow passing through the heat exchanger 140 exchanges heat is ejected from the air injection opening 124 of the air injection component 120, the ambient air around the air supply opening 117 is sucked and mixed with the heat exchange air flow with severe ambient temperature difference, thus ensuring that the sent air flow is soft, the feeling of blowing to a human body is more comfortable, on one hand, the air supply amount of the indoor unit 100 is increased, the flow of indoor air is accelerated, the indoor temperature can be uniformly reduced as a whole, and the air outlet of the wall-mounted air conditioner indoor unit 100 of the invention is oblong (also referred to as a racetrack shape), the whole structure is similar to that of the traditional wall-mounted indoor unit, the wall-mounted air conditioner indoor unit is easy to accept by a user, the installation position is flexible, the internal component structure is compact, the space in the shell 110 is fully utilized, and the wall-mounted air conditioner indoor unit can be thinner.
The heat exchange airflow of the wall-mounted air conditioner indoor unit 100 of the present embodiment has the following flow directions: after the first centrifugal fan 131 and the second centrifugal fan 151 are started, air around the indoor unit 100 is sucked into the heat exchanger accommodating chamber from the air inlets 116 on both sides, and exchanges heat with the heat exchanger 140. A part of the air flow after heat exchange enters the first centrifugal fan 131, is accelerated by the first impeller 133, enters the first air guide component 136 through the first volute 134, is guided by the first drainage segment 137 of the first air guide component 136, and enters the first air collection cavity 139 of the first air supply segment 138. The air flow finally passes through the exhaust port of the first air supply section 138 in a vortex manner in the first air collection chamber 139, enters the annular air supply chamber 125 from the first air inlet 1291, and finally is sent out from the air jet 124, thereby forming a first heat exchange air flow.
The other part of the air flow after heat exchange enters the second centrifugal fan 151, is accelerated by the second impeller 153, enters the second air guide component 156 through the second volute 154, is guided by the second drainage section 157 of the second air guide component 156, and enters the second air collection cavity 159 of the second air supply section 158. The air flow finally passes through the exhaust port of the second air supply section 158 in a vortex manner in the second air collection chamber 159 from the second air inlet 1292 into the annular air supply chamber 125 and finally out of the air jet 124, thereby forming a second heat exchange air flow.
After entering the air supply cavity 125, the first heat exchange air flow and the second heat exchange air flow are guided by the rear side edge 126 of the annular inner wall 121 to be ejected forward from the air jet 124 at a high speed, so that the air in the air circulation area at the rear of the air supply opening 117 is driven to be sucked through the air suction hole 123 of the air jet component 120, and is mixed in front of the indoor unit 100 and then sent into a room, the air outlet volume is greatly increased, and meanwhile, the air flow after heat exchange is mixed with ambient air and becomes cool and not cool soft air flow, so that the flow of indoor air is accelerated.
In the case where the first air blowing unit and the second air blowing unit are independently activated, the flow direction of each air flow is similar to that described above, and the air supply chamber 125 sends out the air flow from the first air blowing unit or the second air blowing unit.
By now it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described herein in detail, many other variations or modifications of the invention consistent with the principles of the invention may be directly ascertained or inferred from the present disclosure without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and deemed to cover all such other variations or modifications.

Claims (9)

1. An indoor unit of a wall-mounted air conditioner, comprising:
the shell comprises a housing and a front panel arranged in front of the housing, air inlets are respectively formed in two sides of the housing, an oblong air supply opening is formed in the front panel, and the shell is arranged obliquely downwards relative to a supporting wall body for fixing the indoor unit of the wall-mounted air conditioner so that the air supply opening faces obliquely downwards;
the heat exchanger is arranged in the shell and close to the front panel, and the position of the heat exchanger is communicated with the air inlet;
the air injection component is arranged in the air supply opening, an air injection opening is formed in the inner peripheral wall of the air injection component, the air injection opening is used for injecting heat exchange air flow in the air injection component forwards and driving ambient air in an air suction hole defined by the inner peripheral wall of the air injection component to be sent out obliquely downwards, and the air suction hole is communicated with the surrounding environment at the upstream of the air supply direction;
the first air supply assembly and the second air supply assembly are transversely arranged in the shell at intervals, and the first air supply assembly is used for generating first heat exchange airflow which enters from the air inlet at one side and is supplied to the air injection component after heat exchange with the heat exchanger; the second air supply assembly is used for generating second heat exchange air flow which enters from the air inlet at the other side and is supplied to the air injection component after exchanging heat with the heat exchanger;
One end of the fixing frame is fixedly connected with the back of the housing, and the other end of the fixing frame is used for being fixed on the supporting wall;
the air injection component comprises an annular inner wall and an annular outer wall, wherein the inner side of the annular inner wall is provided with an air suction hole, the annular outer wall and the annular inner wall are provided with an air supply cavity together, the edge of the annular outer wall connected with the annular inner wall forms an air injection port, the transverse two ends of the annular outer wall are respectively provided with a first air inlet and a second air inlet for receiving heat exchange air flow, and
the first air supply assembly is connected with the first air inlet so as to supply the first heat exchange air flow to the air supply cavity through the first air inlet, and the second air supply assembly is connected with the second air inlet so as to supply the second heat exchange air flow to the air supply cavity through the second air inlet;
the air supply cavity is internally provided with a wind shield, the air supply cavity is divided into two chambers, one chamber is communicated with the first air inlet and used for receiving first heat exchange air flow from the first air supply assembly, and the other chamber is communicated with the second air inlet and used for receiving second heat exchange air flow from the second air supply assembly.
2. The wall-mounted air conditioner indoor unit of claim 1, further comprising:
at least a part of the lower edge of the back of the housing forms a chamfer so as to be attached to the support wall by the chamfer after the fixing frame is fixed with the support wall, thereby supporting the indoor unit.
3. The wall-mounted air conditioner indoor unit of claim 2, wherein
The housing is disposed at an inclination angle range of 5 to 30 degrees with respect to the wall.
4. The wall-mounted air conditioner indoor unit of claim 1, wherein
The rear side edge of the annular inner wall is recessed towards the interior of the air supply cavity, and the position, opposite to the rear side edge of the annular inner wall, of the annular outer wall is provided with an outward flanging, so that a gap between the annular outer wall and the rear side edge of the annular inner wall forms the air injection port; and is also provided with
The annular inner wall extending forwardly from its rear side edge to form a continuous outwardly expanding coanda surface; and is also provided with
The section of the part of the annular outer wall, which is positioned at the rear side of the air injection component, is spiral, so that the air flow of the air supply cavity is ejected out from the air injection port along the annular outer wall, is sent out along the coanda surface formed by the annular inner wall, and drives the ambient air behind the air supply port to be pumped out.
5. The wall-mounted air conditioner indoor unit of claim 1, wherein
The air injection component comprises two sections of spaced horizontal sections and two sections of arc-shaped sections connected with the two sections of horizontal sections, so that the air injection component integrally forms an oblong shape matched with the air supply outlet, and the annular outer walls of the two sections of arc-shaped sections are respectively provided with the first air inlet and the second air inlet.
6. The wall-mounted air conditioner indoor unit of claim 1, further comprising:
the center of the partition plate is recessed backwards to define a heat exchanger accommodating cavity for arranging the heat exchanger with the front panel, backward flanges are formed on two sides of the partition plate, and the air inlet is formed at a position opposite to the flanges, so that the flanges of the partition plate and the side wall of the housing define an air inlet channel from the air inlet to the heat exchanger accommodating cavity.
7. The wall-mounted air conditioner indoor unit of claim 6, wherein
The backward concave part of the baffle plate is also provided with a first through hole and a second through hole which are transversely arranged at intervals,
the first air supply assembly includes: the first centrifugal fan is used as a power source of the first heat exchange airflow, the impeller and the volute of the first centrifugal fan are arranged in a space defined by the partition plate and the housing, the exhaust port of the volute of the first centrifugal fan faces the side wall of the housing on one side of the first air inlet, the exhaust port of the volute of the first centrifugal fan is connected with the air inlet of the first air guide component, and the air collecting port of the first centrifugal fan penetrates out from the first through hole to suck air from the heat exchanger accommodating cavity to form the first heat exchange airflow; the first air guide component is connected between the air outlet of the first centrifugal fan and the first air inlet so as to guide the air flow discharged by the first centrifugal fan into the air supply cavity;
The second air supply assembly includes: the second centrifugal fan is used as a power source of the second heat exchange airflow, the impeller and the volute of the second centrifugal fan are also arranged in a space defined by the partition plate and the housing, the exhaust port of the volute of the second centrifugal fan faces the side wall of the housing on one side of the second air inlet, the exhaust port of the volute of the second centrifugal fan is connected with the air inlet of the second air guide component, and the air collecting port of the second centrifugal fan penetrates out from the second through hole to suck air from the heat exchanger accommodating cavity to form the second heat exchange airflow; the second air guide component is connected between the air outlet of the second centrifugal fan and the second air inlet so as to guide the air flow exhausted by the second centrifugal fan into the air supply cavity.
8. The wall-mounted air conditioner indoor unit of claim 7, wherein
The air supply port is transversely arranged at the upper part of the front panel and
the first wind-guiding part includes: a first flow guiding section having an air inlet of the first air guiding member, and at least a part of the first flow guiding section being spirally formed so as to guide an air flow direction discharged from the first centrifugal fan to an upward direction; the first air supply section is connected with the first drainage section, a first air collection cavity is defined in the first air supply section and used for receiving air flow discharged by the first centrifugal fan, and a first air outlet connected with the first air inlet is formed in the first air supply section so that the air flow of the first air collection cavity is supplied to the air supply cavity; and is also provided with
The second air guiding member includes: a second flow guiding section having an air inlet of the second air guiding member, and at least a part of the second flow guiding section being spirally formed so as to guide an air flow direction discharged from the second centrifugal fan to an upward direction; the second air supply section is connected with the second drainage section, a second air collection cavity is defined in the second air supply section and used for receiving air flow exhausted by the second centrifugal fan, and a second air outlet connected with the second air inlet is formed in the second air supply section so that the air flow of the second air collection cavity is supplied to the air supply cavity.
9. The wall-mounted air conditioner indoor unit of claim 8, wherein
The first drainage section gradually tapers from the air inlet of the first air guide component along the air flow direction, the first air supply section forms a volute shape along the air outlet direction of the first drainage section, and the wind resistance of the first heat exchange air flow in the first air collection cavity is reduced; and is also provided with
The second drainage section gradually tapers from the air inlet of the second air guide component along the air flow direction, the second air supply section forms a volute shape along the air outlet direction of the second drainage section, and the wind resistance of the second heat exchange air flow in the second air collection cavity is reduced.
CN201711048323.8A 2017-10-31 2017-10-31 Indoor unit of wall-mounted air conditioner Active CN108072107B (en)

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Publication number Priority date Publication date Assignee Title
JP2001355908A (en) * 2000-06-14 2001-12-26 Kubota Corp Air conditioner
CN103206415A (en) * 2011-07-04 2013-07-17 李耀强 Airflow injection device
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CN205137697U (en) * 2015-11-13 2016-04-06 青岛海尔空调器有限总公司 Air -conditioning indoor unit
CN105627426A (en) * 2014-11-03 2016-06-01 青岛海尔空调器有限总公司 Wall-mounted type air conditioner indoor unit
CN207584902U (en) * 2017-10-31 2018-07-06 青岛海尔空调器有限总公司 Wall-hanging indoor unit of air conditioner

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2001355908A (en) * 2000-06-14 2001-12-26 Kubota Corp Air conditioner
CN103206415A (en) * 2011-07-04 2013-07-17 李耀强 Airflow injection device
CN104879308A (en) * 2014-06-30 2015-09-02 广东美的环境电器制造有限公司 Fan
CN105627426A (en) * 2014-11-03 2016-06-01 青岛海尔空调器有限总公司 Wall-mounted type air conditioner indoor unit
CN204693612U (en) * 2015-03-31 2015-10-07 四川长虹电器股份有限公司 A kind of air-conditioning indoor host computer
CN205137697U (en) * 2015-11-13 2016-04-06 青岛海尔空调器有限总公司 Air -conditioning indoor unit
CN207584902U (en) * 2017-10-31 2018-07-06 青岛海尔空调器有限总公司 Wall-hanging indoor unit of air conditioner

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