CN114623500A - Air conditioner indoor unit and air conditioner - Google Patents
Air conditioner indoor unit and air conditioner Download PDFInfo
- Publication number
- CN114623500A CN114623500A CN202011443339.0A CN202011443339A CN114623500A CN 114623500 A CN114623500 A CN 114623500A CN 202011443339 A CN202011443339 A CN 202011443339A CN 114623500 A CN114623500 A CN 114623500A
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- heat exchange
- heat
- air
- air conditioner
- flow channel
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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
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0059—Indoor units, e.g. fan coil units characterised by heat exchangers
- F24F1/0063—Indoor units, e.g. fan coil units characterised by heat exchangers by the mounting or arrangement of the 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
- F24F1/00—Room units for air-conditioning, e.g. separate or self-contained units or units receiving primary air from a central station
- F24F1/0007—Indoor units, e.g. fan coil units
- F24F1/0011—Indoor units, e.g. fan coil units characterised by air outlets
Abstract
The invention provides an air conditioner indoor unit and an air conditioner. Wherein, machine in the air conditioning includes: the shell is provided with an air inlet and an air outlet, and the air inlet is positioned above the air outlet along a first direction; the heat exchanger is positioned in the shell, a heat exchange area is formed between the heat exchanger and the shell, and the heat exchange area is communicated with the air outlet; the heat exchange radiation plate is connected with the shell; the air flow enters the heat exchange area after being subjected to heat exchange through the heat exchanger from the air inlet and flows through the heat exchange radiation plate along the air outlet; the first direction is the direction of gravity. When the air conditioner runs, air flow enters the heat exchange area after exchanging heat through the heat exchanger from the air inlet and flows to the heat exchange radiation plate along the air outlet, and the heat exchanger is combined with the heat exchange radiation plate, so that the heat exchange area of the air conditioner is increased, and the heat exchange capacity is improved.
Description
Technical Field
The invention relates to the technical field of household appliances, in particular to an air conditioner indoor unit and an air conditioner.
Background
At present, an air conditioner adopting natural convection for heat exchange has low heat exchange efficiency and poor refrigerating or heating capacity, so that the user experience is poor.
Disclosure of Invention
The present invention has been made to solve at least one of the problems occurring in the prior art or the related art.
To this end, a first aspect of the invention proposes an air conditioning indoor unit.
A second aspect of the present invention provides an air conditioner.
In view of the above, an aspect of the present invention provides an indoor unit of an air conditioner, including: the shell is provided with an air inlet and an air outlet, and the air inlet is positioned above the air outlet along a first direction; the heat exchanger is positioned in the shell, a heat exchange area is formed between the heat exchanger and the shell, and the heat exchange area is communicated with the air outlet; the heat exchange radiation plate is connected with the shell; the air flow enters the heat exchange area after being subjected to heat exchange through the heat exchanger from the air inlet and flows through the heat exchange radiation plate along the air outlet; the first direction is the direction of gravity.
The invention provides an air-conditioning indoor unit which comprises a shell, a heat exchanger and a heat exchange radiation plate. The heat exchanger is positioned in the shell to form a heat exchange area between the heat exchanger and the shell, the heat exchange area is communicated with the air outlet, and the heat exchange radiation plate is positioned at the air outlet. Therefore, when the air conditioner operates, airflow enters the heat exchange area after exchanging heat through the heat exchanger from the air inlet and flows through the heat exchange radiation plate along the air outlet. This setting has increased the heat transfer area of air conditioner, has promoted the heat transfer ability of air conditioner.
It can be understood that when the air conditioner carries out natural convection refrigeration, the air current enters the heat exchange area after passing through the heat exchanger from the air inlet and then flows out from the air outlet. Specifically, the heat exchange area is communicated with the air inlet and the air outlet, the air inlet is located above the air outlet along a first direction, when the air conditioner performs natural convection refrigeration, air flow entering from the air inlet enters the heat exchange area after being subjected to heat exchange through the heat exchanger, the air flow is changed into cold air for refrigeration after being subjected to heat exchange through the heat exchanger, the density of the cold air is high, the cold air flows to the air outlet below after being subjected to heat exchange through the gravity, and the cold air flows to the heat exchange radiation plate through the air outlet. Negative pressure is formed in the shell after cold air flows out, and then air is continuously sucked to flow into a heat exchange area in the shell from the air inlet, so that air circulation is formed. The refrigeration is realized by utilizing a natural convection mode, the whole heat exchange process does not need a fan to work, the good heat exchange capacity can be ensured, and the use comfort of a user is improved when the user sleeps, or needs to be kept quiet in a room, or is stable in a temperature area of the room. And refrigeration is realized through a natural convection mode, cold air is prevented from blowing directly to users, no wind sensation air outlet is realized, and the air conditioner indoor unit has the effects of no wind sensation air outlet and no noise.
It can be understood that, the air current is flowed by the air outlet, and to heat transfer radiation board, cold air sinks in order to paste heat transfer radiation board downflow, separate heat transfer radiation board and indoor air phase, when guaranteeing to change heat radiation board and carry out the heat transfer to cold air, reduce by a wide margin or even eliminate because of the great condensation water volume that generates on heat transfer radiation board of the difference in temperature between indoor hot air and the heat transfer radiation board, avoid because produce a large amount of comdenstion water on heat transfer radiation board surface, make the air conditioning indoor set breed the bacterium under the long-term wet cold situation, influence the indoor air quality of room, bring the health problem for the user.
According to the air-conditioning indoor unit of the invention, the following additional technical characteristics can be provided:
in any of the above technical solutions, further, the heat exchange radiation plate extends along the first direction.
In this technical scheme, through the structure of reasonable setting heat transfer radiation plate for heat transfer radiation plate extends along the first direction, and like this, the cold air that does benefit to the air outlet and flow along heat transfer radiation plate, with validity and the feasibility of guaranteeing heat transfer radiation plate and indoor air to keep apart. Meanwhile, the heat exchange radiation plate is arranged along the gravity direction, the flowing resistance to cold air is small, and the contact friction force between the air flow and the heat exchange radiation plate is reduced, so that the heat generated during friction is reduced, the flowing speed of the air flow is accelerated, and the refrigerating capacity of the air conditioner is further improved.
Furthermore, the heat exchange radiation plate extends along the first direction, so that the installation and the fixation of the indoor unit of the air conditioner are convenient, and the occupancy rate of the indoor unit of the air conditioner to the indoor space is reduced. And this structural setting compares in heat transfer radiation plate slope setting, can avoid the condition emergence that indoor set of air conditioner and indoor household electrical appliances and furniture interfere mutually even collide. For example, the air conditioner is an on-hook type air conditioner, and the indoor unit of the air conditioner is connected with a wall in a hanging mode, so that the heat exchange radiation plate can be arranged along the wall, the appearance is attractive, and the space occupation can be reduced.
In any one of the above technical solutions, further, along the first direction, the bottom of the casing is provided with an air outlet, and the heat exchange radiation plate is located below the casing.
In this technical scheme, cold air density is great, and cold air can sink under the action of gravity, so with the air outlet setting in the bottom of casing, the air outlet is little to the flow resistance of air current, and cold air can flow by the air outlet with great speed to direct flow to the heat transfer radiation plate of casing below, with the effective contact of guaranteeing cold air and heat transfer radiation plate, and then guarantee heat transfer radiation plate and indoor air separated validity.
In any of the above technical solutions, further, the heat exchanger includes: the first heat exchange part is obliquely arranged relative to the first direction, the upper end part of the first heat exchange part is arranged close to the back plate of the shell, and the lower end part of the first heat exchange part is arranged far away from the back plate; the air inlet comprises a first sub-opening, and the first sub-opening is arranged on the top wall and/or the side wall of the shell.
In this technical scheme, first subinterval is located the roof and/or the lateral wall of casing, and first heat transfer portion sets up for first direction slope, and the upper end of first heat transfer portion is close to the backplate of casing and sets up, and the lower tip of first heat transfer portion keeps away from the backplate and sets up, that is to say, first heat transfer portion encloses into triangle-shaped region with the roof and the lateral wall of casing, and the air current flows into triangle-shaped region through first subinterval, and first heat transfer portion carries out the heat transfer to the air current.
Through the position that sets up of reasonable first heat transfer portion that sets up, make first heat transfer portion set up for the slope of first direction, in the limited space of casing, the heat transfer area has been increased, and then the output capacity of machine in the air conditioning has been promoted, and then heat exchange efficiency has been promoted, with arrival user's settlement temperature as early as possible, and then promote the travelling comfort that the user used, can satisfy the air conditioner that the bedroom scene used has under the condition of good body temperature when the user sleeps, and can not receive and blow, the influence of noise, the machine has the effect of no wind-sensing air-out and noiselessness promptly in the air conditioning, and is suitable for popularization and application.
Simultaneously, first heat transfer portion sets up for first direction slope, can guide the air current to the casing bottom and flow to be convenient for cold air sinks naturally, promotes natural convection ability. Also, this arrangement facilitates collection of condensed water.
Specifically, a part of the shell corresponding to the first heat exchanging part is provided with a first sub-port, and the airflow enters the heat exchanging area through the first heat exchanging part from the first sub-port and flows to the heat exchanging radiation plate along the air outlet.
In any of the above technical solutions, further, the heat exchanger further includes: a second heat exchanging part, an upper end portion of which is connected with a lower end portion of the first heat exchanging part, the second heat exchanging part extending in the first direction; the air inlet also comprises a second sub-opening which is arranged on the side wall of the shell; wherein, a part of air current enters the heat exchange area after passing through the second heat exchange part heat exchange by the second sub-port, and a part of air current enters the heat exchange area after passing through the first heat exchange part heat exchange by the first sub-port.
In this technical scheme, the casing is equipped with the second subinterval corresponding to the part of second heat transfer portion, and the air current gets into the heat transfer region behind the heat transfer of second heat transfer portion by the second subinterval, flows to heat transfer radiation plate along the air outlet. Through the cooperation structure of rationally setting up first heat transfer portion and second heat transfer portion for the upper end of second heat transfer portion is connected with the lower tip of first heat transfer portion, and second heat transfer portion extends along first direction. This setting is increasing heat transfer area, when promoting heat exchange efficiency, reduces the occupancy to the casing inner space, and the installation location of the other devices of the machine in the air conditioning of being convenient for avoids and takes place to interfere between other devices. Meanwhile, the structure does not block the air outlet, so that the air flow can flow conveniently.
It can be understood that the air current enters the heat exchange area through the heat exchange of the second heat exchange part by the second sub-port, and converges with the air current entering the heat exchange area through the heat exchange of the first sub-port by the first heat exchange part, and sinks along the first direction, thereby increasing the air flow of natural convection refrigeration and improving the effect of the refrigeration capacity of the air conditioner.
In any of the above technical solutions, further, the heat exchange radiation plate includes a metal plate and a first heat exchange flow channel, and the first heat exchange flow channel is disposed on the metal plate; the heat exchanger is provided with a second heat exchange flow channel, the first heat exchange flow channel is communicated with the second heat exchange flow channel, or the first heat exchange flow channel is connected with the second heat exchange flow channel in parallel.
In this technical scheme, the heat transfer radiation plate includes metal sheet and first heat transfer runner, and first heat transfer runner is located on the metal sheet, and the metal sheet has support and fixed effect to first heat transfer runner. The refrigerant flows in the first heat exchange flow channel to exchange heat with the airflow flowing out of the air outlet, and the first heat exchange flow channel limits the flow path of the refrigerant and has a guiding function on the refrigerant in the first heat exchange flow channel. In addition, the metal plate has good heat conduction performance, and the metal plate is matched with the first heat exchange flow channel to enhance the heat exchange efficiency of the heat exchange radiation plate and the airflow.
Similarly, the heat exchanger is provided with a second heat exchange flow channel, the refrigerant flows in the second heat exchange flow channel to exchange heat with the air flow flowing into the shell from the air inlet, and the second heat exchange flow channel limits the flow path of the refrigerant and has a guiding function on the refrigerant in the second heat exchange flow channel.
Further, the first heat exchange flow channel and the second heat exchange flow channel can be communicated or connected in parallel. The first heat exchange flow channel is communicated with the second heat exchange flow channel, the refrigerant flows to the first heat exchange flow channel through the second heat exchange flow channel, the temperature difference between the temperature of the refrigerant at the heat exchanger and the temperature of the refrigerant discharged from the heat exchange radiation plate is favorably reduced, and therefore the generation of condensed water at the heat exchange radiation plate is favorably reduced while the heat exchange capacity of the air conditioner is ensured. The problem that bacteria are bred in the air-conditioning indoor unit under the long-term wet and cold condition to influence the air quality in a room and bring health to users due to the fact that a large amount of condensed water is generated on the surface of the heat exchange radiation plate is avoided.
Furthermore, the first heat exchange flow channel and the second heat exchange flow channel can be connected in parallel according to specific practical conditions, so that the relative independence of the first heat exchange flow channel and the second heat exchange flow channel is ensured. Therefore, if one of the subsequent heat exchanger and the heat exchange radiation plate is damaged, the normal use of the other heat exchanger and the heat exchange radiation plate can not be influenced.
In any one of the above technical solutions, further, the number of the first heat exchange flow channels is plural, and the plural first heat exchange flow channels are uniformly distributed on the metal plate.
In this technical scheme, a plurality of first heat transfer runners evenly distribute on the metal sheet, are full of the refrigerant in first heat transfer runner, should set up the area of contact who has increased refrigerant and metal sheet to guarantee that the air current can carry out the heat transfer with the refrigerant of the different positions department of metal, increased heat transfer area, be favorable to promoting heat exchange efficiency, can make heat transfer radiation plate have better heat transfer effect.
In any of the above technical solutions, further, along the first direction, the plurality of first heat exchange flow channels are arranged at intervals; or along a second direction, the plurality of first heat exchange flow channels are arranged at intervals, and the second direction is perpendicular to the first direction.
In this technical scheme, a plurality of first heat transfer runners are along first direction interval arrangement, perhaps follow the second direction interval arrangement of perpendicular to first direction, constitute heat transfer radiation plate together with the metal sheet to guarantee the equilibrium of the heat transfer ability of heat transfer radiation plate different positions department, improve indoor ambient temperature comfort level, and the first heat transfer runner processing technology who evenly arranges is simple, the batch production of being convenient for, improves production efficiency.
In any of the above technical solutions, further, the metal plate is integrally connected with the first heat exchange flow channel.
In the technical scheme, the metal plate is welded, pulled and pressed or blown to realize the integral connection of the first heat exchange runner and the metal plate, and the structure arrangement omits the assembly process of the metal plate and the first heat exchange runner, so that the assembly and subsequent disassembly processes of the metal plate and the first heat exchange runner are simplified, the assembly and disassembly efficiency of the air conditioner is favorably improved, and the production and maintenance cost can be reduced. In addition, the metal plate and the first heat exchange flow channel are integrally connected, so that the requirement on the size precision of product forming can be met.
In any of the above technical solutions, further, the heat exchange radiation plate further includes: and the heat absorption layer coats the outer surface of at least one of the metal plate and the first heat exchange flow channel.
In the technical scheme, the heat absorbing layer is arranged to coat the outer surface of at least one of the metal plate and the first heat exchange flow channel, for example, a black coating or a dark coating is coated on the outer surface of at least one of the metal plate and the first heat exchange flow channel in a coating manner, the heat absorbing layer has a high heat absorbing speed, so that the radiation refrigeration effect of the heat exchange radiation plate is enhanced, and meanwhile, the heat absorbing layer arranged on the outer surface of at least one of the metal plate and the first heat exchange flow channel can play a role in rust prevention and corrosion prevention, so that the service life and the efficiency of the heat exchange radiation plate are prolonged.
Of course, the heat absorbing layer can also be bonded to cover the outer surface of at least one of the metal plate and the first heat exchange flow channel.
In any of the above technical solutions, further, the air conditioner indoor unit further includes: the first water receiving box is positioned in the shell, and at least part of the heat exchanger is positioned above the first water receiving box along a first direction; and the second water receiving box is connected with the heat exchange radiation plate, and at least part of the heat exchange radiation plate is positioned above the second water receiving box along the first direction.
In this technical scheme, machine in air conditioning still includes first water receiving box and second water receiving box, and at least part heat exchanger is located the top of first water receiving box, and the comdenstion water on the heat exchanger can directly drip into in the first water receiving box, and partial heat transfer radiation board is located the top of second water receiving box to collect the small amount of comdenstion water that produces on the heat transfer radiation board, avoid the comdenstion water directly to drip.
A second aspect of the present invention provides an air conditioner comprising: an air conditioning indoor unit according to any one of the first to fourth aspects.
The air conditioning room provided by the invention comprises the air conditioning indoor unit according to any one of the first technical scheme, so that all the beneficial effects of the air conditioning indoor unit are achieved, and the description is omitted here.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
fig. 1 is a schematic view illustrating a first view angle of an air conditioning indoor unit according to an embodiment of the present invention;
FIG. 2 shows an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural view illustrating a second view angle of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 4 is a schematic structural view illustrating a third view angle of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 5 is a schematic structural view illustrating a fourth view angle of an air conditioning indoor unit according to an embodiment of the present invention;
fig. 6 is a schematic view illustrating a first view angle of an air conditioning indoor unit according to another embodiment of the present invention;
fig. 7 is a schematic view showing a second perspective structure of an air conditioning indoor unit according to another embodiment of the present invention;
fig. 8 is a schematic structural view illustrating a third view angle of an air conditioning indoor unit according to another embodiment of the present invention;
fig. 9 is a schematic view illustrating a fourth view of an air conditioning indoor unit according to another embodiment of the present invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 1 to 9 is:
100 indoor unit of air conditioner, 110 shell, 112 air inlet, 1122 first sub-opening, 1124 second sub-opening, 114 air outlet, 116 back plate, 120 heat exchanger, 122 first heat exchanging part, 124 second heat exchanging part, 126 second heat exchanging flow channel, 130 heat exchanging radiation plate, 132 metal plate, 134 first heat exchanging flow channel, 140 heat exchanging area, 150 first water receiver, 160 second water receiver, 170 fluidic device, 172 nozzle, 174 fan.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
An air conditioning indoor unit 100 and an air conditioner according to some embodiments of the present invention will be described below with reference to fig. 1 to 9.
Example 1:
as shown in fig. 1, 3, 4, 5, 6, 7, 8, and 9, an embodiment of a first aspect of the present invention provides an air conditioning indoor unit 100, including: the casing 110 is provided with an air inlet 112 and an air outlet 114, and the air inlet 112 is positioned above the air outlet 114 along a first direction; the heat exchanger 120 is positioned in the shell 110, a heat exchange area 140 is formed between the heat exchanger 120 and the shell 110, and the heat exchange area 140 is communicated with the air outlet 114; heat exchange radiation plate 130 connected to case 110; wherein, the air flow enters the heat exchange area 140 after passing through the heat exchanger 120 for heat exchange from the air inlet 112, and flows through the heat exchange radiation plate 130 along the air outlet 114; the first direction is the direction of gravity.
In detail, the air conditioning indoor unit 100 includes a case 110, a heat exchanger 120, and a heat exchanging radiation plate 130. The heat exchanger 120 is located in the casing 110 to form a heat exchange area 140 with the casing 110, the heat exchange area 140 is communicated with the air outlet 114, and the heat exchange radiation plate 130 is located at the air outlet 114. Therefore, when the air conditioner is operated, the airflow enters the heat exchange area 140 from the air inlet 112 after being subjected to heat exchange by the heat exchanger 120, and flows through the heat exchange radiation plate 130 along the air outlet 114. This setting has increased the heat transfer area of air conditioner, has promoted the heat transfer ability of air conditioner.
It is understood that when the air conditioner performs natural convection cooling, the air flow enters the heat exchanging region 140 after passing through the heat exchanger 120 from the air inlet 112, and then flows out from the air outlet 114. Specifically, the heat exchange area 140 is communicated with the air inlet 112 and the air outlet 114, and along the first direction, the air inlet 112 is located above the air outlet 114, when the air conditioner performs natural convection cooling, an air flow entering from the air inlet 112 enters the heat exchange area 140 after being subjected to heat exchange by the heat exchanger 120, the air flow is changed into cold air for cooling after being subjected to heat exchange by the heat exchanger 120, the density of the cold air is high, the cold air flows to the air outlet 114 below after being subjected to heat exchange by gravity, and the cold air flows to the heat exchange radiation plate 130 from the air outlet 114. The cool air flows out of the rear housing 110 to form a negative pressure, and then continues to be sucked into the heat exchange area 140 in the housing 110 from the air inlet 112, so as to form an air circulation. The refrigeration is realized by utilizing a natural convection mode, the whole heat exchange process does not need a fan to work, the good heat exchange capacity can be ensured, and the use comfort of a user is improved when the user sleeps, or needs to be kept quiet in a room, or is stable in a temperature area of the room. And refrigeration is realized in a natural convection mode, cold air is prevented from blowing directly to users, and no wind-sensing air outlet is realized, namely the air-conditioning indoor unit 100 has the effects of no wind-sensing air outlet and no noise.
It can be understood that, the air current flows out by air outlet 114, and to heat transfer radiation plate 130, cold air sinks to flow downwards with pasting heat transfer radiation plate 130, separate heat transfer radiation plate 130 with indoor air, when guaranteeing heat transfer radiation plate 130 to carry out the heat transfer to cold air, reduce by a wide margin or even eliminate because the difference in temperature between indoor hot air and heat transfer radiation plate 130 is great and the amount of the condensate water that generates on heat transfer radiation plate 130, avoid because produce a large amount of comdenstion water on heat transfer radiation plate 130 surface, make air conditioning indoor set 100 breed the bacterium under the long-term wet cold condition, influence the air quality in the room, bring health problem for the user.
Specifically, as shown in fig. 1, the arrows indicate the flow direction of the airflow.
Specifically, the casing 110 may have a rectangular parallelepiped shape or other shapes, that is, the air conditioning indoor unit 100 may be designed into different shapes as needed.
Specifically, as shown in fig. 6 to 9, the indoor unit 100 of the air conditioner further includes a jet device 170, the jet device 170 is disposed in the casing 110, the jet device 170 includes a nozzle 172 and a fan 174, an inlet of the fan 174 is communicated with the air inlet 112, an outlet of the fan 174 is communicated with the nozzle 172, and the nozzle 172 is communicated with the heat exchange area 140. When the air conditioner is cooling and the jet device 170 is turned on, a portion of the air flow enters the inlet of the fan 174 from the air inlet 112, and is then sequentially sprayed to the heat exchange area 140 by the outlet of the fan 174 and the nozzle 172. The high-speed airflow ejected from the nozzle 172 forms a negative pressure region in the heat exchange region 140, so that more indoor air is guided to flow from the air inlet 112, to the heat exchanger 120, to be supplemented into the heat exchange region 140, and then to flow to the heat exchange radiation plate 130 through the air outlet 114. That is, the airflow flowing out through the air outlet 114 is the sum of the airflow provided by the jet device 170 and the supplemented airflow after heat exchange. This setting has increaseed the air-out amount of wind of air conditioner for the air current that flows to heat transfer radiation plate 130 through air outlet 114 includes the air current that gets into and carry out efflux two parts air current by fluidic device 170 through heat exchanger 120 heat transfer by air intake 112, has promoted the effect of heat transfer, has improved the work efficiency of indoor set greatly.
Specifically, a heat exchange structure may be disposed so that the heat exchange structure is located between the inlet of the fan and the air inlet 112, and thus, the air flow entering the inlet of the fan is the air flow after heat exchange by the heat exchange structure, which is beneficial to accelerating the heat exchange of the mixed air flow in the heat exchange area 140, and further, the heat exchange capability of the air conditioner may be improved.
Example 2:
as shown in fig. 1, 3, 4, 5, 6, 7, 8 and 9, according to one embodiment of the invention, including features defined in any of the embodiments above, and further: heat exchanging radiation plates 130 extend in a first direction.
In detail, through the structure that rationally sets up heat transfer radiation plate 130 for heat transfer radiation plate 130 extends along first direction, like this, does benefit to the cold air that air outlet 114 flows along heat transfer radiation plate 130, with validity and the feasibility of guaranteeing heat transfer radiation plate 130 and indoor air isolation. Meanwhile, the heat exchange radiation plate 130 is arranged along the gravity direction, so that the flow resistance to cold air is small, and the contact friction force between air flow and the heat exchange radiation plate 130 is reduced, therefore, the heat generated during friction is reduced, the flow speed of the air flow is accelerated, and the refrigerating capacity of the air conditioner is further improved.
Further, the heat exchange radiation plate 130 extends in the first direction, so that the installation and fixation of the indoor unit 100 are facilitated to reduce the occupancy rate of the indoor unit 100 to the indoor space. And the structure is arranged obliquely compared with the heat exchange radiation plate 130, so that the condition that the indoor unit 100 of the air conditioner interferes with indoor household appliances and furniture or even collides can be avoided. For example, the air conditioner is an on-hook type air conditioner, and the indoor unit of the air conditioner is connected with the wall in a hanging manner, so that the heat exchange radiation plate 130 can be arranged along the wall, the appearance is attractive, and the space occupation can be reduced.
In other embodiments, heat exchanging radiation plate 130 may be disposed along a second direction, for example, the second direction is perpendicular to the first direction.
Example 3:
as shown in fig. 1 and 4, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: along the first direction, the bottom of the casing 110 is provided with an air outlet 114, and the heat exchange radiation plate 130 is located below the casing 110.
In detail, the density of the cold air is large, and the cold air sinks under the action of gravity, so that the air outlet 114 is arranged at the bottom of the shell 110, the flow resistance of the air outlet 114 to the airflow is small, the cold air can flow out from the air outlet 114 at a large speed, and directly flows to the heat exchange radiation plate 130 below the shell 110, so that the effective contact between the cold air and the heat exchange radiation plate 130 is ensured, and the effectiveness of the heat exchange radiation plate 130 and the indoor air separation is further ensured.
In other embodiments, a portion of the outlet 114 is located at the bottom of the housing 110, and another portion of the outlet 114 is located at the side of the housing 110.
In other embodiments, the air outlet 114 is located on the side of the housing 110.
Specifically, the number of the air outlets 114 is one or more, and when the number of the air outlets 114 is plural, the air outlets 114 are uniformly distributed at the bottom of the housing 110 to increase the air outlet area and accelerate the outflow of the airflow.
Specifically, the cross-sectional shape of the outlet port 114 may be circular, bar-shaped, or polygonal.
Example 4:
as shown in fig. 1 and 9, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: the heat exchanger 120 includes: a first heat exchanging part 122, the first heat exchanging part 122 being disposed to be inclined with respect to the first direction, an upper end portion of the first heat exchanging part 122 being disposed close to the back plate 116 of the case 110, and a lower end portion of the first heat exchanging part 122 being disposed far from the back plate 116; the air inlet 112 includes a first sub-opening 1122, and the first sub-opening 1122 is disposed on a top wall and/or a side wall of the housing 110.
In detail, the first sub-opening 1122 is located on a top wall and/or a side wall of the casing 110, the first heat exchanging portion 122 is disposed obliquely with respect to the first direction, an upper end portion of the first heat exchanging portion 122 is disposed close to the back plate 116 of the casing 110, and a lower end portion of the first heat exchanging portion 122 is disposed away from the back plate 116, that is, the first heat exchanging portion 122 and the top wall and the side wall of the casing 110 enclose a triangular region, the airflow flows into the triangular region through the first sub-opening 1122, and the first heat exchanging portion 122 exchanges heat with the airflow.
Through the position that sets up of reasonable first heat transfer portion 122, make first heat transfer portion 122 set up for the slope of first direction, in casing 110 limited space, the heat transfer area has been increased, and then the output capacity of machine 100 in the air conditioning has been promoted, and then heat exchange efficiency has been promoted, with arrival user's settlement temperature as early as possible, and then promote the travelling comfort that the user used, can satisfy the air conditioner that the bedroom scene used has under the condition of good body temperature when the user sleeps, and can not receive and blow, the influence of noise, machine 100 in the air conditioning has the effect of no wind-induced air-out and noiselessness promptly, and is suitable for popularization and application.
Meanwhile, the first heat exchanging portion 122 is disposed obliquely with respect to the first direction, and can guide airflow to flow toward the bottom of the housing 110, so that the cold air naturally sinks, and natural convection capacity is improved. Also, this arrangement facilitates collection of condensed water.
Specifically, the casing 110 has the back plate 116 (for example, when the indoor unit of the air conditioner is hooked to an indoor wall, the back plate 116 of the casing 110 is close to the wall), and along the gravity direction, the distance between the first heat exchanging portion 122 and the back plate 116 is gradually increased from the top to the bottom of the first heat exchanging portion 122, so that after the air flow exchanges heat with the first heat exchanging portion 122, the air flow can gradually move downwards under the guidance of the heat exchanging area 140, so that the air flow which becomes cold after the heat exchange flows out from the air outlet 114, natural sinking of the cold air is realized, and natural convection capability is improved.
Specifically, the first sub-port 1122 is provided on a top wall of the housing 110, or the first sub-port 1122 is provided on a side wall of the housing 110, or a part of the first sub-port 1122 is provided on the top wall of the housing 110, and another part of the first sub-port 1122 is provided on the side wall of the housing 110.
Example 5:
as shown in fig. 1 and 9, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: the heat exchanger 120 further includes: a second heat exchanging part 124, an upper end portion of the second heat exchanging part 124 being connected to a lower end portion of the first heat exchanging part 122, the second heat exchanging part 124 extending in the first direction; the air inlet 112 further includes a second sub-opening 1124, the second sub-opening 1124 is disposed on a sidewall of the housing 110; a part of the air flow enters the heat exchange region 140 after passing through the second heat exchanging part 124 through the second sub-opening 1124 and enters the heat exchange region 140 after passing through the first heat exchanging part 122 through the first sub-opening 1122.
In detail, a portion of the casing 110 corresponding to the second heat exchanging portion 124 is provided with a second sub-opening 1124, and the air flow enters the heat exchanging region 140 after heat exchange by the second sub-opening 1124 through the second heat exchanging portion 124, and flows to the heat exchanging and radiating plate 130 along the air outlet 114. By reasonably arranging the matching structure of the first heat exchanging part 122 and the second heat exchanging part 124, the upper end of the second heat exchanging part 124 is connected with the lower end of the first heat exchanging part 122, and the second heat exchanging part 124 extends along the first direction. This setting reduces the occupancy to casing 110 inner space when increasing heat transfer area, promotes heat exchange efficiency, and the installation of the other devices of machine 100 is fixed a position in the air conditioning of being convenient for, avoids taking place to interfere with between other devices. Meanwhile, the structure does not block the air outlet 114, so that the air flow is convenient.
It can be understood that the air flow enters the heat exchanging region 140 after the heat exchange through the second heat exchanging portion 124 by the second sub-opening 1124, and joins the air flow entering the heat exchanging region 140 after the heat exchange through the first heat exchanging portion 122 by the first sub-opening 1122, and sinks along the first direction, so as to increase the air flow rate of the natural convection cooling, and improve the cooling capability of the air conditioner.
Example 6:
as shown in fig. 3, according to an embodiment of the invention, comprising the features defined in any of the above embodiments, and further: the heat exchange radiation plate 130 comprises a metal plate 132 and a first heat exchange flow channel 134, wherein the first heat exchange flow channel 134 is arranged on the metal plate 132; the heat exchanger 120 is provided with a second heat exchange flow channel 126, and the first heat exchange flow channel 134 is communicated with the second heat exchange flow channel 126, or the first heat exchange flow channel 134 is connected in parallel with the second heat exchange flow channel 126.
In detail, the heat exchanging radiation plate 130 includes a metal plate 132 and a first heat exchanging flow channel 134, the first heat exchanging flow channel 134 is disposed on the metal plate 132, and the metal plate 132 has a supporting and fixing function on the first heat exchanging flow channel 134. The refrigerant flows in the first heat exchanging flow channel 134 to exchange heat with the airflow flowing out of the air outlet 114, and the first heat exchanging flow channel 134 defines a flow path of the refrigerant and has a guiding function on the refrigerant therein. In addition, the metal plate 132 has good heat conductivity, and the metal plate 132 is matched with the first heat exchange flow channel 134 to enhance the heat exchange efficiency of the heat exchange radiation plate 130 with the air flow.
Similarly, the heat exchanger 120 is provided with a second heat exchanging flow passage 126, the refrigerant flows in the second heat exchanging flow passage 126 to exchange heat with the airflow flowing into the housing 110 from the air inlet 112, and the second heat exchanging flow passage 126 defines a flow path of the refrigerant and has a guiding function on the refrigerant therein.
Further, the first heat exchange flow channel 134 is communicated with the second heat exchange flow channel 126, the refrigerant flows to the first heat exchange flow channel 134 through the second heat exchange flow channel 126, the arrangement is favorable for reducing the temperature difference between the refrigerant at the heat exchanger 120 and the refrigerant out of the heat exchange radiation plate 130, and therefore the generation of condensed water at the heat exchange radiation plate 130 is favorably reduced while the heat exchange capacity of the air conditioner is ensured. The problem that bacteria are bred in the air-conditioning indoor unit 100 under the long-term wet and cold condition due to the fact that a large amount of condensed water is generated on the surface of the heat exchange radiation plate 130, the air quality in a room is affected, and health problems are brought to users is avoided.
Further, the first heat exchanging flow channel 134 and the second heat exchanging flow channel 126 may be connected in parallel according to actual conditions, so as to ensure the relative independence between the first heat exchanging flow channel 134 and the second heat exchanging flow channel 126. Thus, if one of the subsequent heat exchanger 120 and the heat exchange radiation plate 130 is damaged, the other one will not be affected in normal use.
Specifically, the metal plate 132 is integrally connected with the casing 110 of the indoor unit 100 of the air conditioner, and the structural arrangement simplifies the assembling and subsequent disassembling processes of the metal plate 132 and the casing 110 because the assembling process of the metal plate 132 and the casing 110 is omitted, thereby facilitating the improvement of the assembling and disassembling efficiency and further reducing the production and maintenance cost. In addition, the metal plate 132 is integrally connected with the housing 110, so that the dimensional accuracy requirement of product molding can be ensured.
Specifically, the metal plate 132 is detachably connected to the housing 110. For example, the metal plate 132 may be connected to the housing 110 by any one or a combination of the following: clamping, screwing, magnetic attraction and fastening connection through a fastener (such as a screw, a bolt or a rivet). The metal plate 132 is detachably connected with the housing 110, that is, the metal plate 132 and the housing 110 can be disassembled and assembled and the installation position of the metal plate 132 relative to the housing 110 can be determined according to actual conditions, so that the air conditioner can meet the use requirements of air conditioners of different models, the adaptability of the product is high, and the use performance of the product is improved.
Specifically, heat exchange and radiation plate 130 further includes a radiation member, and the radiation member is connected to metal plate 132 to improve the heat exchange capability of heat exchange and radiation plate 130, for example, the radiation member is a fin.
Example 7:
according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: the number of the first heat exchanging channels 134 is plural, and the plural first heat exchanging channels 134 are uniformly distributed on the metal plate 132.
In detail, a plurality of first heat exchange flow channels 134 are evenly distributed on metal plate 132, and the refrigerant is filled in first heat exchange flow channels 134, and this setting has increased the area of contact of refrigerant and metal plate 132 to guarantee that the air current can carry out the heat transfer with the refrigerant of the different positions department of metal, increased heat transfer area, be favorable to promoting heat exchange efficiency, can make heat transfer radiation plate 130 have better heat transfer effect.
Further, along the first direction, a plurality of first heat exchange flow channels 134 are arranged at intervals; or along a second direction, which is perpendicular to the first direction, the plurality of first heat exchange flow channels 134 are arranged at intervals. The plurality of first heat exchange flow channels 134 are arranged at intervals along the first direction, or arranged at intervals along the second direction perpendicular to the first direction, and form the heat exchange radiation plate 130 together with the metal plate 132, so that the balance of heat exchange capacity at different positions of the heat exchange radiation plate 130 is ensured, the comfort level of indoor environment temperature is improved, and the uniformly arranged first heat exchange flow channels 134 are simple in processing technology, convenient for batch production and improved in production efficiency.
In the present embodiment, the first heat exchanging channels 134 are connected in parallel, and the arrangement can reduce the flow resistance of the refrigerant.
In other embodiments, the first heat exchange flow channel 134 may be configured according to practical situations, for example, a plurality of first heat exchange flow channels 134 are connected end to form a spiral structure.
Further, the metal plate 132 is integrally connected with the first heat exchange flow channel 134. Adopt the process form of welding, drawing and pressing, or inflation on metal sheet 132, realize that first heat transfer runner 134 is connected with the integral type of metal sheet 132, this structural arrangement is owing to saved the assembly process of metal sheet 132 with first heat transfer runner 134, so simplified the process of the assembly of metal sheet 132 with first heat transfer runner 134 and follow-up dismantlement, is favorable to promoting the assembly and the dismantlement efficiency of air conditioner, and then can reduce production and maintenance cost. In addition, the metal plate 132 and the first heat exchange flow channel 134 are integrally connected, so that the requirement of the product on the dimensional accuracy during molding can be ensured.
In other embodiments, the metal plate 132 is removably connected to the first heat exchanging channel 134. For example, the metal plate 132 and the first heat exchanging channel 134 can be connected by any one or a combination of the following methods: clamping, screwing, magnetic attraction and fastening connection through a fastener (such as a screw, a bolt or a rivet). When the metal plate 132 is connected to the first heat exchanging flow channel 134, the heat exchanging radiation plate 130 further includes a sealing member for sealing the connection position of the metal plate 132 and the first heat exchanging flow channel 134, for example, the sealing member includes a sealing ring. The arrangement can avoid the leakage of the refrigerant and the pollution of the refrigerant.
Example 8:
according to an embodiment of the invention, including the features defined in any of the above embodiments, and further: heat exchange radiation plate 130 further comprises: and a heat absorbing layer covering an outer surface of at least one of the metal plate 132 and the first heat exchange flow channel 134. By arranging the heat absorbing layer, the heat absorbing layer covers the outer surface of at least one of the metal plate 132 and the first heat exchanging flow channel 134, for example, a black coating or a dark coating is coated on the outer surface of at least one of the metal plate 132 and the first heat exchanging flow channel 134 in a coating manner, the heat absorbing layer increases the heat absorbing speed, so that the radiation refrigeration effect of the heat exchanging and radiating plate 130 is enhanced, and meanwhile, the heat absorbing layer arranged on the outer surface of at least one of the metal plate 132 and the first heat exchanging flow channel 134 can also play roles of rust prevention and corrosion prevention, so that the service life and the efficiency of the heat exchanging and radiating plate 130 are increased.
Of course, the heat absorbing layer may also be adhered to cover the outer surface of at least one of the metal plate 132 and the first heat exchanging flow channel 134.
Example 9:
as shown in fig. 1, 2, 5, 7, 8 and 9, according to one embodiment of the invention, the features defined in any of the above embodiments are included, and further: the indoor unit of air conditioner 100 further includes: the first water receiving box 150 is positioned in the shell 110, and at least part of the heat exchanger 120 is positioned above the first water receiving box 150 along the first direction; and the second water receiving box 160 is connected with the heat exchange radiation plate 130, and at least part of the heat exchange radiation plate 130 is positioned above the second water receiving box 160 along the first direction.
In detail, the indoor unit 100 of the air conditioner further includes a first water receiving box 150 and a second water receiving box 160, at least a portion of the heat exchanger 120 is located above the first water receiving box 150, condensed water on the heat exchanger 120 can directly drip into the first water receiving box 150, and a portion of the heat exchange radiation plate 130 is located above the second water receiving box 160, so as to collect a small amount of condensed water generated on the heat exchange radiation plate 130, and prevent the condensed water from directly dripping.
At least one of the first and second water receiving boxes 150 and 160 is formed in a half-H shape.
Example 10:
an embodiment of a second aspect of the present invention provides an air conditioner, including: an air conditioning indoor unit 100 according to any one of the first to third embodiments.
The air conditioning room provided by the present invention includes the air conditioning indoor unit 100 according to any one of the embodiments of the first aspect, so that all the advantages of the air conditioning indoor unit 100 are achieved, which is not described herein.
Specifically, the air conditioner includes a compressor in communication with the first heat exchange flow passage 134 and the second heat exchange flow passage 126.
The specific embodiment is as follows:
as shown in fig. 1 and 5, the indoor unit 100 of an air conditioner includes a casing 110, a heat exchanger 120, and a heat exchanging radiation plate 130. The heat exchanger 120 includes a first heat exchanging part 122 and a second heat exchanging part 124, the first heat exchanging part 122 is disposed obliquely, and the second heat exchanging part 124 is disposed vertically to form a heat exchanging region 140 where cold air is collected. A portion of the air inlet 112 is located at the top of the housing 110, and the central plane of the first heat exchanging portion 122 is a triangular area enclosed by the top wall plane and the front surface of the housing 110, which are perpendicular to the side walls of the housing 110. Another portion of the air inlet 112 is located on a vertical plane right in front of the second heat exchanging part 124.
The indoor air enters the heat exchanging area 140 after being heat exchanged by the heat exchanger 120, and at this time, the air is cooled and dehumidified, and the cool air flows out directly and downwardly along with the heat exchanging area 140. Affected by the coanda effect, it will cling to the heat exchange radiation plate 130 below, thus isolating the heat exchange radiation plate 130 from direct contact with the indoor air. Therefore, the temperature of the heat exchange radiation plate 130 is only near the temperature of the upper heat exchanger 120, and the problem of a large amount of air condensation on the heat exchange radiation plate 130 can be effectively avoided. In this way, the cooling effect of the whole air conditioner can be achieved by both the natural convection of the cold air and the radiation of the heat exchange radiation plate 130, and thus the performance is the combination of the two abilities, which is better than that of a single part.
Heat exchanging radiation plate 130 includes a metal plate 132 and a first heat exchanging flow channel 134. The first heat exchange flow channel 134 and the metal plate 132 are tightly connected by welding, drawing, pressing, blowing and the like on the metal plate 132, so that the cold can be better conducted on the metal plate 132. In an overall form, the first heat exchange flow channel 134 may be a capillary network structure, which is formed by attaching a plurality of vertical or horizontal capillaries arranged in parallel to the metal plate 132. Or a plurality of first heat exchange flow channels 134 with larger inner diameter can be generated by blowing and drawing and pressing. And the plurality of first heat exchanging flow channels 134 uniformly cover the entire metal plate 132 in order to make the entire metal plate 132 at a lower temperature value relatively uniformly. Integrally, the first heat exchange flow channel 134 of the heat exchange radiation plate 130 may be connected in parallel or in series with the second heat exchange flow channel 126 of the heat exchanger 120. For example, in a serial connection manner, in order to reduce the condensed water on the heat exchange radiation plate 130, the second heat exchange flow channel 126 passes through the heat exchanger 120 and then enters the first heat exchange flow channel 134 of the heat exchange radiation plate 130. A second water receiving box 160 in a half-H shape is designed below the heat exchange radiation plate 130 so as to collect a small amount of condensed water generated on the heat exchange radiation plate 130. To enhance the radiation cooling effect, the entire metal plate 132 may be painted black or dark.
Specifically, the air conditioner is a ceiling type air conditioner or a floor type air conditioner.
In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. An indoor unit of an air conditioner, comprising:
the shell is provided with an air inlet and an air outlet, and the air inlet is positioned above the air outlet along a first direction;
the heat exchanger is positioned in the shell, a heat exchange area is formed between the heat exchanger and the shell, and the heat exchange area is communicated with the air outlet;
the heat exchange radiation plate is connected with the shell;
the air flow enters the heat exchange area after being subjected to heat exchange through the heat exchanger from the air inlet, and flows through the heat exchange radiation plate along the air outlet;
the first direction is a direction of gravity.
2. An indoor unit of an air conditioner according to claim 1,
the heat exchange radiation plates extend along the first direction.
3. An indoor unit of an air conditioner according to claim 1,
along first direction, the bottom of casing is equipped with the air outlet, the heat transfer radiation plate is located the below of casing.
4. An indoor unit of an air conditioner according to claim 1, wherein the heat exchanger includes:
the first heat exchange part is obliquely arranged relative to the first direction, the upper end of the first heat exchange part is close to the back plate of the shell, and the lower end of the first heat exchange part is far away from the back plate;
the air inlet comprises a first sub-opening, and the first sub-opening is arranged on the top wall and/or the side wall of the shell.
5. An indoor unit of an air conditioner according to claim 4, wherein the heat exchanger further comprises:
a second heat exchanging part, an upper end portion of which is connected to a lower end portion of the first heat exchanging part, the second heat exchanging part extending in the first direction;
the air inlet also comprises a second sub-opening which is arranged on the side wall of the shell;
and part of the air flow enters the heat exchange area after passing through the second heat exchange part via the second sub-port for heat exchange, and part of the air flow enters the heat exchange area after passing through the first heat exchange part via the first sub-port for heat exchange.
6. An indoor unit of an air conditioner according to any one of claims 1 to 5,
the heat exchange radiation plate comprises a metal plate and a first heat exchange flow channel, and the first heat exchange flow channel is arranged on the metal plate;
the heat exchanger is provided with a second heat exchange flow channel, the first heat exchange flow channel is communicated with the second heat exchange flow channel, or the first heat exchange flow channel is connected with the second heat exchange flow channel in parallel.
7. An indoor unit of an air conditioner according to claim 6,
the number of the first heat exchange flow channels is multiple, and the multiple first heat exchange flow channels are uniformly distributed on the metal plate;
along the first direction, a plurality of first heat exchange flow channels are arranged at intervals; or along a second direction, the first heat exchange flow channels are arranged at intervals, and the second direction is perpendicular to the first direction.
8. An indoor unit of an air conditioner according to claim 6,
the metal plate is integrally connected with the first heat exchange flow channel.
9. An indoor unit of an air conditioner according to claim 6, wherein the heat exchanging radiation plate further comprises:
and the heat absorbing layer coats the outer surface of at least one of the metal plate and the first heat exchange flow channel.
10. An air conditioner, comprising:
the indoor unit of an air conditioner according to any one of claims 1 to 9.
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| CN202011443339.0A CN114623500A (en) | 2020-12-11 | 2020-12-11 | Air conditioner indoor unit and air conditioner |
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| CN202011443339.0A CN114623500A (en) | 2020-12-11 | 2020-12-11 | Air conditioner indoor unit and air conditioner |
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| CN114623500A true CN114623500A (en) | 2022-06-14 |
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| CN202011443339.0A Pending CN114623500A (en) | 2020-12-11 | 2020-12-11 | Air conditioner indoor unit and air conditioner |
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