CN107965843B - Wall-mounted air conditioner indoor unit - Google Patents
Wall-mounted air conditioner indoor unit Download PDFInfo
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- CN107965843B CN107965843B CN201711153300.3A CN201711153300A CN107965843B CN 107965843 B CN107965843 B CN 107965843B CN 201711153300 A CN201711153300 A CN 201711153300A CN 107965843 B CN107965843 B CN 107965843B
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- air
- wall
- section
- air supply
- indoor unit
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0003—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station characterised by a split arrangement, wherein parts of the air-conditioning system, e.g. evaporator and condenser, are in separately located units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/40—Casings; Connections of working fluid
- F04D29/42—Casings; Connections of working fluid for radial or helico-centrifugal pumps
- F04D29/44—Fluid-guiding means, e.g. diffusers
- F04D29/441—Fluid-guiding means, e.g. diffusers especially adapted for elastic fluid pumps
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F13/00—Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening
- F24F13/08—Air-flow control members, e.g. louvres, grilles, flaps or guide plates
- F24F13/10—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
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
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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
- F24F13/30—Arrangement or mounting of heat-exchangers
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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
- F24F13/1426—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means
- F24F2013/1433—Air-flow control members, e.g. louvres, grilles, flaps or guide plates movable, e.g. dampers built up of tilting members, e.g. louvre characterised by actuating means with electric motors
Abstract
The invention provides a wall-mounted air conditioner indoor unit, which comprises: the shell comprises a housing, wherein the top wall of the housing is provided with an air inlet, and the lower part of the front panel is provided with an oblong air supply outlet; the heat exchanger comprises a first heat exchange section arranged at a position close to the front panel and a second heat exchange section arranged at a position close to the top wall of the housing; the annular inner wall of the air injection part defines an air suction hole, the annular outer wall and the annular inner wall define an air supply cavity together, and an air injection port is formed at the edge of the annular outer wall connected with the annular inner wall and used for injecting air flow of the air supply cavity forwards and enabling air at the rear part of the air injection port to be sucked and pass through the air suction hole; the air supply assembly comprises a centrifugal fan and an air guide component, the centrifugal fan is configured to enable ambient air to enter from the air inlet at the top to exchange heat with the heat exchanger, and air flow after heat exchange is discharged to the air supply cavity through the air guide component. The wall-mounted air conditioner indoor unit has the advantages of compact structure, soft air supply and good comfort.
Description
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 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 that cold air is slowly convected with ambient air after being sent into a room, the heat exchange speed is slow, the feeling of rapid cooling cannot be brought to people, and the air supply outlet of an indoor unit is directly blown to people, so that adverse effects can be brought to the health of the users, and air conditioning diseases are easy to appear.
To solve this problem, the indoor unit with the air outlet for jetting air outlet for soft air supply has appeared in the prior art, and it utilizes the smaller air outlet to drive the ambient air to blow out, so that the air after heat exchange and the ambient air are mixed and sent out, however, the requirement of the air outlet for the structure is higher, so that the air outlet is mostly applied to the cabinet type indoor unit with abundant space. In order to meet the structural requirements of the air outlet, the casing of the hanging type indoor unit with the air outlet often needs to be round or in other irregular shapes, so that on one hand, the difference exists between the use habits of users and the existing cognition of the hanging type indoor unit, and the hanging type indoor unit is not easy to accept by the users; on the other hand, the installation of the hanging type indoor unit is troublesome, so that the hanging type indoor unit applying the jet air outlet can not meet the use requirements of users.
Disclosure of Invention
The invention aims to provide a wall-mounted air conditioner indoor unit which is soft in air supply and high in heat exchange speed.
A further object of the present invention is to make the wall-mounted air conditioner indoor unit compact and conform to the user's usage habits.
In particular, the present invention provides a wall-mounted type air conditioner indoor unit, comprising:
the air conditioner comprises a shell, a fan and a fan, wherein the shell comprises a housing and a front panel arranged in front of the housing, an air inlet is formed in the top wall of the housing, and an oblong air supply outlet is formed in the lower part of the front panel; (ii) a
The heat exchanger is arranged in the shell and comprises a first heat exchange section and a second heat exchange section, wherein the first heat exchange section is arranged at a position close to the front panel, and the second heat exchange section is arranged at a position close to the top wall of the housing;
the air injection part is arranged in the air supply port and comprises an annular inner wall and an annular outer wall, wherein the annular inner wall defines an air suction hole, the annular outer wall and the annular inner wall define an air supply cavity together, an air injection port is formed in the edge where the annular outer wall is connected with the annular inner wall and is used for injecting airflow in the air supply cavity forwards, and air behind the air supply port is sucked to penetrate through the air suction hole;
an air supply assembly, comprising: the centrifugal fan is configured to enable ambient air to enter from the air inlet to exchange heat with the heat exchanger, and air flow after heat exchange is discharged to the air supply cavity through the air guide component.
Optionally, the wall-mounted air conditioner indoor unit further comprises a partition plate, wherein the partition plate comprises a longitudinal plate part arranged in parallel with the front panel, and the middle part of the longitudinal plate part is recessed backwards to form a first heat exchanger accommodating cavity used for arranging the first heat exchange section with the front panel; and is
The air intake is formed by the air inlet grid that the housing top set up, and the baffle still includes the horizontal plate portion that meets and set up with the housing top interval with the top of vertical plate portion, and the middle part of horizontal plate portion is recessed downwards to and housing roof between inject the second heat exchanger that is used for arranging the second heat transfer section and hold the chamber, the second heat exchanger holds the chamber and holds the chamber intercommunication with first heat exchanger.
Optionally, a through hole is formed in the center of the longitudinal plate portion, and a gas collection port of the centrifugal fan passes through the through hole, so that the centrifugal fan sucks air in the first heat exchanger accommodating cavity; the impeller and the volute of the centrifugal fan are arranged in a space defined by the longitudinal plate part and the housing, and the exhaust port of the volute faces the side wall of the housing; the air inlet of the air guide component is connected with the air outlet of the volute.
Optionally, the wind-guiding component comprises:
the flow guiding section is provided with an air inlet of the air guiding component, at least part of section bodies of the flow guiding section are spiral, and the air flow direction discharged by the centrifugal fan is guided downwards;
and the air supply section is connected with the drainage section, the air collection cavity is defined in the air supply section to receive the airflow discharged by the centrifugal fan, and the air supply section is provided with an air outlet facing the air injection part to supply the airflow of the air collection cavity to the air supply cavity.
Optionally, the flow guide section tapers from the air inlet of the air guide component in the air flow direction; and the air supply section forms a volute shape along the air outlet direction of the drainage section, so that the wind resistance of the airflow in the air collection cavity is reduced.
Optionally, the air supply section is located below the first heat exchanger accommodating cavity, the distance in the front-back direction of the air supply section is greater than that of the drainage section, and an exhaust port of the air supply section is arranged on the front portion, close to one side of the air injection component, of the air collection cavity.
Optionally, the air injection part comprises two spaced horizontal sections and two arc sections connecting the two horizontal sections, wherein an air inlet of the air injection part is formed in an annular outer wall of the arc section on one side of the air guide part in the two arc sections, and the annular outer wall of the arc section is connected with an air outlet of the air supply section.
Optionally, the rear side edge of the annular inner wall is recessed towards the inside of 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 ejection port.
Optionally, the annular inner wall extends forwardly from its rear edge to form a continuous outwardly flared coanda surface; and 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 airflow of the air supply cavity is ejected from the air injection port along the annular outer wall, is sent out forwards along the coanda surface formed by the annular inner wall, and is driven to draw out the ambient air behind the air supply port.
Alternatively, the casing and the lower portion of the front panel form a blowing port penetrating forward and backward, and the rear side of the casing forms a position of the blowing port recessed forward so that there is an air circulation region behind the blowing port.
The wall-mounted air conditioner indoor unit is characterized in that the long circular air supply opening is arranged below the front panel and used for arranging the annular air injection part, so that air flow subjected to heat exchange of the heat exchanger is sprayed out of the air injection opening of the air injection part to suck ambient air around the air supply opening and is mixed with heat exchange air flow with severe temperature difference with the ambient environment, the delivered air flow is soft and comfortable when being blown to a human body, on one hand, the air supply amount is increased, the flow of indoor air is accelerated, and the indoor temperature can be integrally and uniformly reduced.
Furthermore, the air inlet of the wall-mounted air conditioner indoor unit is arranged on the top wall of the housing and is out of the visual range of a user, so that the integrity of the appearance can be ensured, and heat exchange airflow is smooth. And the indoor set is from the top air inlet, and the below air-out of front panel forms the air current circulation for to indoor temperature rapid adjustment, satisfy user's user demand.
Furthermore, the heat exchanger of the wall-mounted air conditioner indoor unit is divided into two sections, namely a first heat exchange section which is longitudinally attached to the front panel and a second heat exchange section which is transversely or obliquely attached to the top wall of the housing, so that the heat exchange area is increased, and the heat exchange efficiency is improved. In addition, the first heat exchange section and the second heat exchange section can be selectively opened according to the operation mode of the indoor unit so as to meet different heat exchange requirements.
Furthermore, the wall-mounted air conditioner indoor unit has compact structure of internal components, makes full use of the space in the shell and can make the wall-mounted air conditioner indoor unit thinner.
Furthermore, the position and the structure of the components such as the heat exchanger, the centrifugal fan, the air guide component and the like are improved, so that the occupied space is reduced, and the air supply wind resistance can be reduced.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the invention will be described in detail hereinafter, by way of illustration and not limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
fig. 1 is a schematic external view of a wall-mounted type air conditioner indoor unit according to an embodiment of the present invention;
fig. 2 is a schematic exploded view of a wall-mounted air conditioner indoor unit according to an embodiment of the present invention;
fig. 3 is a schematic view of a jet unit of an indoor unit of a wall-mounted air conditioner according to an embodiment of the present invention;
FIG. 4 is a schematic cross-sectional gas flow diagram taken along section line A-A in FIG. 3;
fig. 5 is a schematic view of the internal components of a wall mounted air conditioner indoor unit according to one embodiment of the present invention; and
fig. 6 is a schematic view of an air supply assembly in a wall-mounted air conditioner indoor unit according to an embodiment of the present invention.
Detailed Description
For convenience of description, the directions of "up", "down", "front", "back", "top", "bottom", etc. mentioned in the description are all defined according to the spatial position relationship in the normal working state of the wall-mounted air conditioner indoor unit 100, for example, the side of the wall-mounted air conditioner indoor unit 100 facing the user is front, and the side attached to the installation position is back.
Fig. 1 is a schematic external view of a wall-mounted type air conditioner indoor unit 100 according to an embodiment of the present invention, and fig. 2 is a schematic exploded view of the wall-mounted type air conditioner indoor unit 100 according to an embodiment of the present invention. The wall mounted air conditioner indoor unit 100 may generally include: casing 110, jet part 120, heat exchanger 140, air supply assembly. Wherein the housing 110 may include: a cover 112 and a front panel 114 disposed in front of the cover 112. The cover case 112 is formed of a top wall, side walls, and a back, and defines a space for accommodating internal components, and the front panel 114 is disposed at the front of the cover case 112, thereby closing the internal space of the cover case 112. The housing 110 is provided with an air inlet 116 and an air outlet 117. The air blowing port 117 is disposed in an oblong shape at the lower portion of the casing 110, and communicates with the ambient environment upstream in the air blowing direction, and the air blowing member 120 is disposed in the air blowing port 117.
The intake vent 116 is disposed on a top wall of the housing 112, and the intake vent 116 may be formed of a grill, mesh, or the like. External ambient air may enter the interior of the indoor unit 100 from the top. Because the user generally cannot see the position of the air inlet 116, the arrangement structure of the air inlet 116 can ensure the integrity of the appearance, and the aesthetic degree of the machine body is improved. In addition, the indoor unit 100 supplies air from the top and discharges air from the lower side of the front panel 114 to form an airflow circulation, so that the indoor temperature can be quickly adjusted to meet the use requirements of users.
In some preferred embodiments, the air blowing opening 117 may be formed through the lower portion of the housing 110 in a front-rear direction (the cover 112 and the front panel 114 are provided with oblong through holes at corresponding positions, so as to form the air blowing opening 117 passing through the front-rear direction, the rear side of the cover 112 is recessed forward at a position where the air blowing opening 117 is formed, so that an air circulation region 118 is provided behind the air blowing opening 117, so that the inside of the air blowing opening 117 communicates with the air circulation region 118, and the heat exchange air blown out by the air blowing part 120 may draw the ambient air from the air circulation region 118 to mix, so that the temperature difference between the mixed air flow and the ambient environment is small, the mixed air flow is more gentle, and the air blowing amount is larger, and the flow of the indoor.
Alternatively, the air injection component 120 may also be disposed at a position near the front of the lower portion of the casing 110, and a hollow area communicated with the surrounding environment is opened at the rear portion of the air injection component 120 of the casing 110, that is, at the upstream of the air supply direction, so that the heat exchange air sprayed by the air injection component 120 can suck the ambient air through the hollow area for mixing.
And a heat exchanger 140 disposed inside 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 a part of a refrigeration system, which may be implemented by using a compression refrigeration cycle, which uses a compression phase change cycle of a refrigerant in a compressor, a condenser, an evaporator, and a throttling device to implement heat transfer. The refrigerating system can also be provided with a four-way valve to change the flow direction of the refrigerant, so that the indoor unit heat exchanger 140 can be alternately used as an evaporator or a condenser to realize the refrigerating or heating function. Since the compression refrigeration cycle in the air conditioner is well known to those skilled in the art, the operation principle and structure thereof will not be described herein.
The heat exchanger 140 comprises a first heat exchanging section 1401 and a second heat exchanging section 1402, wherein the first heat exchanging section 1401 is arranged at a position close to the front panel 114, the second heat exchanging section 1402 is arranged at a position close to the top wall of the housing 112, the heat exchanger 140 adopts a two-section structure, a heat exchanging area is enlarged, heat exchanging efficiency is improved, and the first heat exchanging section 1401 and the second heat exchanging section 1402 can be connected in parallel or in series through refrigerant pipelines. When the parallel connection structure is adopted, the first heat exchange section 1401 and the second heat exchange section 1402 can be selectively used according to the operation mode of the indoor unit 100, for example, in a normal mode, only the first heat exchange section 1401 is turned on, and in a situation that the first heat exchange section 1401 cannot meet the requirement, the second heat exchange section 1402 is turned on at the same time. In some alternative embodiments, to facilitate the collection of condensed water, the second heat exchange section 1402 may be inclined.
The air supply assembly includes: centrifugal fan 131 and wind guide member 136. The centrifugal fan 131 is used as a power source for the airflow flowing in the indoor unit 100, and may be configured to allow ambient air to enter from the top air inlet 116, exchange heat with the heat exchanger 140, pass through the centrifugal fan 131, and then be discharged downstream of the airflow, and finally be sent out of the indoor unit 100 through the air injection unit 120. The air guide part 136 is connected between the air outlet of the centrifugal fan 131 and the air supply cavity of the air injection part 120, and is used for guiding the air flow discharged by the centrifugal fan 131 into the air supply cavity.
The air injection component 120 is arranged in the air supply opening 117, the whole air injection component is in an oblong shape (or a runway shape), the center of the air injection component 120 defines an air exhaust hole 123, and the air exhaust hole 123 is communicated front and back. The size and specification of the air injection member 120 and its internal components may be set according to the blowing capacity of the blower module centrifugal fan 131 and the specification and position of the air guide member 136. Fig. 3 is a schematic view of a jet unit 120 of an indoor unit 100 of a wall-mounted air conditioner according to an embodiment of the present invention, and fig. 4 is a schematic sectional view of an air flow pattern taken along a sectional line a-a of fig. 3.
The air injection part 120 comprises an annular inner wall 121 and an annular outer wall 122, the annular inner wall 121 and the annular outer wall 122 jointly form the oval shape, and the inner side of the annular inner wall 121 is provided with an air exhaust hole 123. The edge of the annular outer wall 122 that meets the annular inner wall 121 forms an air jet 124, and the air jet 124 is used to jet the air flow from the supply chamber 125 forward and to draw air behind the supply port 117 through the suction holes 123.
The rear 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 directed flange 127 at a location opposite the rear edge 126 of the annular inner wall 121 so that the gap between the annular outer wall 122 and the rear edge 126 of the annular inner wall 121 forms the air ejection port 124. The concave rear edge 126 of the annular inner wall 121 toward the inside of the air supply chamber 125 can also have the function of guiding the airflow direction, so that the airflow in the air supply chamber 125 can be smoothly sent out from the air outlet 124.
The annular inner wall 121 extends forwardly from its rear edge 126 to form a continuous outwardly flared coanda surface; and the section of the part of the annular outer wall 122 located at the rear side of the air injection member 120 is spiral, so that the air flow of the air supply chamber 125 is ejected from the air injection port 124 along the annular outer wall 122, and then is sent forward along the coanda surface formed by the annular inner wall 121, and drives the ambient air drawn out of the rear side of the air injection port 117. The extension inclination that annular inner wall 121 extends outward extension in succession forward can be 5 to 15 degrees, and inclination is the bigger, and the outside extension speed of air jet 124 spun air current is faster, through a large amount of tests, and annular inner wall 121's extension inclination can set up to between 6 to 10 degrees, more is favorable to mixing with the ambient air in the convulsions hole 123 like this.
The annular inner wall 121 and the annular outer wall 122 jointly define an annular air supply cavity 125 inside the air injection component 120, the annular inner wall 121 and the annular outer wall 122 respectively have two spaced horizontal sections 128 and two arc-shaped sections 129 connecting the two horizontal sections 128, wherein an air inlet of the air injection component 120 is formed in the annular outer wall 122 of the arc-shaped section 129 located on one side of the air guide component 136 in the two arc-shaped sections 129, and is used for receiving heat-exchanged air provided by the air supply assembly. The other side of the arcuate section 129 may be provided with a support 146 on the outside for better securing the jet member 120.
The above sections of the annular inner wall 121 and the annular outer wall 122 are formed from a plurality of connected components, and in some preferred embodiments, the annular inner wall 121 and the annular outer wall 122 may be formed from a unitary molded piece.
The gas ports 124 may be continuous annular grooves, and in alternative embodiments, the gas ports 124 may be formed in sections of the inner and outer annular walls 121, 122, or in spaced segments. For example, the air ejection ports 124 may be provided only on the horizontal section 128 of the air ejection part 120, so that the air ejection is more uniform and the ambient air inside the suction holes 123 can be efficiently entrained. In order to improve the jet velocity of the air jet 124, the width of the air jet 124 can be set to 1 to 3mm, through a large number of tests, the width of the air jet 124 can be preferably set to about 2mm, the air jet 124 with the width of the size can ensure the jet velocity of the heat exchange air flow, and the wind resistance loss of the heat exchange air flow can be reduced as much as possible, so that the noise is reduced. In fig. 4, solid arrows indicate the flow direction of the ambient air, and dashed arrows indicate the flow direction of the heat exchange air ejected from the air ejection port 124.
In some preferred embodiments, the air injection component 120 can also be driven by a motor and a transmission mechanism to realize integral up-and-down swing, adjust the air supply angle and realize swing air supply, so that the air outlet range is wider.
Fig. 5 is a schematic view of internal components of the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The wall-mounted air conditioner indoor unit 100 further includes a partition 143 on an inside thereof, and the partition 143 is used to isolate the heat exchanger 140 from the air supply assembly. The partition 143 includes a longitudinal plate portion 1431 provided parallel to the front panel 114, and a middle portion of the longitudinal plate portion 1431 is recessed rearward to define a first heat exchanger receiving chamber for arranging the first heat exchange section 1401 with the front panel 114. The first heat exchange section 1401 is disposed within the first heat exchanger receiving cavity.
The center of the longitudinal plate portion 1431 is recessed rearward to define a first heat exchanger receiving cavity between the front panels 114 for arranging the first heat exchange section 1401, and the recessed shape of the middle portion of the longitudinal plate portion 1431 is adapted to the outer shape of the first heat exchange section 1401, so that the first heat exchange section 1401 can be fixed in the first heat exchanger receiving cavity.
The partition 143 further includes a transverse plate portion 1432 contiguous with the top of the longitudinal plate portion 1431 and spaced from the top of the casing 112, and a middle portion of the transverse plate portion 1432 is recessed downward to define a second heat exchanger receiving chamber for arranging the second heat exchange section 1402 with the top wall of the casing 112. The first heat exchanger accommodating cavity is communicated with the second heat exchanger accommodating cavity. The air flows in the first heat exchanger accommodating cavity and the second heat exchanger accommodating cavity can be exchanged, so that the heat exchange area is enlarged, and the heat exchange efficiency is improved.
The airflow entering from the air inlet 116 on the top wall of the casing 112 enters the first heat exchanger accommodating cavity to continuously exchange heat with the first heat exchange section 1401 after first exchanging heat with the second heat exchange section 1402 in the second heat exchanger accommodating cavity. The air flows in the first heat exchanger accommodating cavity and the second heat exchanger accommodating cavity can be exchanged, so that the heat exchange area is enlarged, and the heat exchange efficiency is improved. And the first heat exchange section 1401 and the second heat exchange section 1402 can be opened in a controlled manner to meet the working requirements of the indoor unit 100.
The center of the longitudinal plate portion 1431 is provided with a through hole 145 through which the air collecting port 132 of the centrifugal fan 131 passes, so that the centrifugal fan 131 sucks the air in the first heat exchanger accommodating chamber. The impeller 133 and the volute 134 of the centrifugal fan 131 are disposed in the space defined by the longitudinal plate portion 1431 and the housing 112, and the exhaust port of the volute 134 faces the side wall of the housing 110; the air inlet of the air guiding component 136 is connected with the air outlet of the volute 134.
Fig. 6 is a schematic view of an air supply assembly in the wall-mounted air conditioner indoor unit 100 according to an embodiment of the present invention. The air supply assembly includes: centrifugal fan 131 and wind guide member 136. Since the air jet velocity of the air jet part 120 is ensured, the air supply assembly of the present embodiment employs the centrifugal fan 131 as a power source of the air flow.
The centrifugal fan 131 accelerates the gas by using the impeller 133 rotating at a high speed according to the principle that kinetic energy is converted into potential energy, and then decelerates and changes the flow direction, so that the kinetic energy is converted into potential energy. Which generally includes a collection port 132, an impeller 133, and a volute 134. The air collecting port 132 of the centrifugal fan 131 is an air inlet of the fan 131, and is used for ensuring that the air flow can uniformly fill the inlet interface of the impeller 133, so as to reduce the flow loss. When the impeller 133 of the centrifugal fan 131 is driven by the high-speed motor 135 to rotate along with the shaft, the gas between the impellers 133 obtains centrifugal force along with the rotation of the impeller 133, the gas is thrown out of the impeller 133 and enters the volute 134, and the pressure of the gas in the volute 134 is increased and guided to be discharged. After the gas between the blades is discharged, negative pressure is formed; air in the first heat exchanger receiving chamber outside the air collection opening 132 is continuously drawn in, thereby forming a continuous air flow.
The impeller 133 and the volute 134 of the centrifugal fan 131 are disposed in the space defined by the longitudinal plate portion 1431 and the housing 112, and the exhaust port of the volute 134 faces the side wall of the housing 110; the air inlet of the air guiding component 136 is connected with the air outlet of the volute 134. The volute 134 is spiral-shaped, and it sucks air thrown from the impeller 133 and converts the dynamic pressure of the air flow into static pressure by a gradually widening sectional area.
The air guide part 136 is connected between the air outlet of the centrifugal fan 131 and the air supply cavity 125 of the air injection part 120, and is used for guiding the air flow discharged by the centrifugal fan 131 into the air supply cavity 125. The wind-guiding component 136 may include a flow-guiding section 137 and a wind-supplying section 138.
The flow guiding section 137 has an air inlet of the air guiding component 136, at least a part of the flow guiding section 137 is spiral, the airflow direction discharged by the centrifugal fan 131 is guided downwards, and the flow guiding section 137 is gradually reduced from the air inlet of the air guiding component 136 along the airflow direction, so that the wind speed of the airflow entering the air collecting cavity 139 of the air supply section 138 is increased.
The air supply section 138 is connected to the flow guide section 137, and defines an air collecting chamber 139 therein to receive the air flow discharged from the centrifugal fan 131, and the air supply section 138 is provided with an air outlet facing the air injection member 120 to supply the air flow of the air collecting chamber 139 to the air supply chamber 125. The air supply section 138 forms a volute shape along the air outlet direction of the drainage section 137, so that the wind resistance of the airflow in the air collection cavity 139 is reduced, a vortex is formed in the air collection cavity 139, and the airflow can smoothly pass from the air collection cavity 139 to the air supply cavity 125.
The above-mentioned flow guiding section 137 can be disposed at one side of the centrifugal fan 131, due to the space limitation of the partition 143, the front-back distance of the flow guiding section 137 is smaller, and the air supply section 138 is located below the first heat exchanger accommodating cavity (i.e. below the partition 143 and the heat exchanger 140), so that the distance in the front-back direction is greater than that of the flow guiding section 137, and the exhaust port of the air supply section 138 is disposed at the front part of the air collecting cavity 139, which is attached to one side of the air injection component 120. The air inlet of the air injection component 120 is arranged on the annular outer wall 122 of the arc-shaped section 129 positioned at one side of the air guiding component 136 in the two arc-shaped sections 129.
In the wall-mounted air conditioner indoor unit 100 of this embodiment, the air supply opening 117 is disposed below the casing 110, and is used for arranging the annular air injection component 120, so that the air flow heat-exchanged by the heat exchanger 140 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 the air flow heat-exchanged by the intense temperature difference with the ambient environment is mixed, thereby ensuring that the air flow sent out is soft and comfortable to the human body, on one hand, the air supply amount of the indoor unit 100 is increased, the flow of the indoor air is accelerated, and the indoor temperature can be uniformly reduced as a whole, furthermore, the air outlet of the wall-mounted air conditioner indoor unit 100 of the present invention is strip-shaped and is disposed below the casing 110, the overall structure is similar to that of the existing traditional wall-mounted indoor unit, and is easily accepted by users, the wall-mounted air conditioner indoor unit can be made thinner by making full use of the space in the housing 110. In addition, the air inlet 116 is arranged on the top wall of the casing 112, ambient air enters the indoor unit from the top, is sent out from the lower part of the front part after heat exchange, and forms airflow circulation indoors, so that the temperature adjusting speed is higher, and the use requirements of users are met.
The flow direction of the heat exchange airflow of the wall-mounted air conditioner indoor unit 100 of the embodiment is as follows: after the centrifugal fan 131 is started, air around the indoor unit 100 is sucked into the indoor unit 100 from the air inlet 116, exchanges heat with the heat exchanger 140, enters the centrifugal fan 131, is accelerated by the impeller 133, enters the air guide part 136 through the volute 134, is guided by the flow guide section 137 of the air guide part 136, and enters the air collection cavity 139 of the air supply section 138. The airflow travels in a vortex mode in the air collecting cavity 139 and finally enters the annular air supply cavity 125 from the air inlet of the air injection part 120 arranged on the annular outer wall 122 of the air guide part 136 through the air outlet of the air supply section 138. The air flow entering the air supply cavity 125 is guided by the rear side edge 126 of the annular inner wall 121, ejected forward from the air jet 124 at a high speed, drives the air in the air circulation area 118 at the rear part of the air supply opening 117 to be sucked through the air exhaust hole 123 of the air jet part 120, and is mixed in front of the indoor unit 100 and then sent into the room, the air outlet volume is greatly increased, meanwhile, the air flow after heat exchange is mixed with the ambient air to become cool and not cold soft air flow, and the flow of the indoor air is accelerated.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been illustrated and described in detail herein, many other variations or modifications consistent with the principles of the invention may be directly determined or derived from the disclosure of the present invention without departing from the spirit and scope of the invention. Accordingly, the scope of the invention should be understood and interpreted to cover all such other variations or modifications.
Claims (9)
1. A wall-mounted air conditioner indoor unit comprising:
the air conditioner comprises a shell and a fan, wherein the shell comprises a housing and a front panel arranged in front of the housing, an air inlet is formed in the top wall of the housing, and an oblong air supply outlet is formed in the lower part of the front panel;
the heat exchanger is arranged in the shell and comprises a first heat exchange section and a second heat exchange section, wherein the first heat exchange section is arranged at a position close to the front panel, and the second heat exchange section is arranged at a position close to the top wall of the housing;
the air injection component is arranged in the air supply port and comprises an annular inner wall and an annular outer wall, wherein the annular inner wall defines an air suction hole, the annular outer wall and the annular inner wall jointly define an air supply cavity, an air injection port is formed in the edge of the annular outer wall, which is connected with the annular inner wall, and the air injection port is used for injecting the air flow in the air supply cavity forwards and enabling the air behind the air supply port to be sucked and pass through the air suction hole; and
an air supply assembly, comprising: the centrifugal fan is configured to enable ambient air to enter from the air inlet so as to exchange heat with the heat exchanger, and air flow after heat exchange is discharged to the air supply cavity through the air guide component;
the annular inner wall and the annular outer wall are respectively provided with two spaced horizontal sections and two arc-shaped sections connecting the two horizontal sections, the annular outer wall of the arc-shaped section positioned on one side of the air guide component in the two arc-shaped sections is provided with an air inlet of the air injection component, and the outer side of the arc-shaped section positioned on one side far away from the air guide component in the two arc-shaped sections is provided with a support.
2. The wall mounted air conditioner indoor unit according to claim 1, further comprising:
the partition plate comprises a longitudinal plate part arranged in parallel with the front panel, and the middle part of the longitudinal plate part is recessed backwards so as to define a first heat exchanger accommodating cavity used for arranging the first heat exchange section with the front panel; and is
The air inlet by the air inlet grid that the housing top set up forms, the baffle still include with the top of longitudinal plate meets and with the horizontal board that the housing top interval set up, the middle part of horizontal board is recessed downwards, with inject between the housing roof and be used for arranging the second heat exchanger of second heat transfer section holds the chamber, the second heat exchanger hold the chamber with first heat exchanger holds the chamber intercommunication.
3. The wall mounted air conditioner indoor unit according to claim 2, wherein
A through hole is formed in the center of the longitudinal plate part, and a gas collection port of the centrifugal fan passes through the through hole, so that the centrifugal fan sucks air in the first heat exchanger accommodating cavity;
the impeller and the volute of the centrifugal fan are arranged in a space defined by the longitudinal plate part and the housing, and the exhaust port of the volute faces the side wall of the housing;
the air inlet of the air guide component is connected with the air outlet of the volute.
4. The wall mounted air conditioner indoor unit according to claim 3, wherein the air guiding member comprises:
the flow guiding section is provided with an air inlet of the air guide component, at least part of the flow guiding section is spiral, and the air flow direction discharged by the centrifugal fan is guided downwards;
and the air supply section is connected with the drainage section, a gas collecting cavity is limited in the air supply section to receive the airflow discharged by the centrifugal fan, and the air supply section is provided with an air outlet facing the air injection part to supply the airflow of the gas collecting cavity to the air supply cavity.
5. The wall mounted air conditioner indoor unit according to claim 4, wherein
The flow guide section is gradually reduced from the air inlet of the air guide component along the airflow direction; and is
The air supply section forms a volute shape along the air outlet direction of the drainage section, and the wind resistance of airflow in the air collection cavity is reduced.
6. The wall mounted air conditioner indoor unit according to claim 5, wherein
The air supply section is located below the first heat exchanger accommodating cavity, the distance between the front direction and the rear direction of the air supply section is larger than that of the drainage section, and an exhaust port of the air supply section is arranged on the front portion, attached to one side of the air injection component, of the air collection cavity.
7. The wall mounted air conditioner indoor unit according to claim 1, wherein
The rear side edge of the annular inner wall is recessed towards the inner part of the air supply cavity, and an outward flange is arranged at the position, opposite to the rear side edge of the annular inner wall, of the annular outer wall, so that the air injection port is formed in a gap between the annular outer wall and the rear side edge of the annular inner wall.
8. The wall mounted air conditioner indoor unit according to claim 7, wherein
Said annular inner wall extending forwardly from a rear side edge thereof to form a continuous outwardly flared coanda surface; and is
The section of the part of the annular outer wall, which is positioned at the rear side of the air injection part, is spiral, so that the airflow of the air supply cavity is ejected from the air injection port along the annular outer wall, is sent out forwards along the coanda surface formed by the annular inner wall, and drives the ambient air behind the air injection port to be pumped out.
9. The wall mounted air conditioner indoor unit according to claim 1, wherein
The casing and the lower part of the front panel form the air supply opening which penetrates through the front and the back, and the position of the air supply opening formed on the back side of the casing is recessed forwards, so that an air circulation area is formed behind the air supply opening.
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| CN201711153300.3A CN107965843B (en) | 2017-11-20 | 2017-11-20 | Wall-mounted air conditioner indoor unit |
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| CN201711153300.3A CN107965843B (en) | 2017-11-20 | 2017-11-20 | Wall-mounted air conditioner indoor unit |
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| CN107965843B true CN107965843B (en) | 2020-04-24 |
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| CN103206415B (en) * | 2011-07-04 | 2015-07-15 | 李耀强 | Airflow injection device |
| KR20150062348A (en) * | 2013-11-29 | 2015-06-08 | 엘지전자 주식회사 | Dehumidifier |
| 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 |
| CN108105851B (en) * | 2017-10-31 | 2019-11-05 | 青岛海尔空调器有限总公司 | Wall-hanging indoor unit of air conditioner |
| CN207702594U (en) * | 2017-11-20 | 2018-08-07 | 青岛海尔空调器有限总公司 | Wall-hanging indoor unit of air conditioner |
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Effective date of registration: 20201030 Address after: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee after: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. Patentee after: Haier Zhijia Co.,Ltd. Address before: 266101 Haier Industrial Park, Haier Road, Laoshan District, Shandong, Qingdao, China Patentee before: QINGDAO HAIER AIR CONDITIONER GENERAL Corp.,Ltd. |
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