CN211781468U - Indoor unit and air conditioner - Google Patents
Indoor unit and air conditioner Download PDFInfo
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- CN211781468U CN211781468U CN202020331868.0U CN202020331868U CN211781468U CN 211781468 U CN211781468 U CN 211781468U CN 202020331868 U CN202020331868 U CN 202020331868U CN 211781468 U CN211781468 U CN 211781468U
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Abstract
The application discloses indoor unit and air conditioner relates to air treatment equipment technical field for solve among the prior art problem that the indoor unit produces the condensation easily. The indoor unit comprises a shell, wherein a first air duct for communicating a first indoor air return opening, a fresh air opening and an indoor air outlet and a second air duct for communicating a second indoor air return opening and an outdoor air outlet are formed in the shell; the heat exchanger is arranged in the first air duct; the first fan is positioned between the heat exchanger and the indoor air outlet; the second fan is arranged in the second air duct; the partition is arranged in the first air duct, the heat exchanger consists of a first heat exchange section and a second heat exchange section which are spliced with each other, the first heat exchange section is arranged close to the first indoor air return opening, the second heat exchange section is arranged close to the fresh air opening, and the partition separates the air duct between the first indoor air return opening and the first heat exchange section and the air duct between the fresh air opening and the second heat exchange section; the first fan is a centrifugal fan, and a static pressure cavity is arranged between an air outlet of the first fan and an indoor air outlet.
Description
Technical Field
The application relates to the technical field of air conditioning equipment, in particular to an indoor unit and an air conditioner.
Background
Along with the continuous improvement of air conditioning technology, not only can realize the regulation of room air temperature among the current air conditioner, introduce new trend moreover and carry out the function that purifies to the room air.
Fig. 1 shows a schematic structural diagram of an existing air-conditioning indoor unit, the indoor unit includes a casing 01, a clean air return inlet 011, a dirty air inlet 012, a clean air supply outlet 013, a fresh air inlet 014 and an air outlet 015 are provided on the casing 01, an air duct is formed in the casing 01, a heat exchange coil 02, a circulating fan 03, an air energy heat exchanger 04 and an air exhaust fan 05 are installed in the air duct, and arrows of different types in fig. 1 are respectively used for indicating the flowing directions of fresh air intake, indoor clean air return, indoor air supply and indoor dirty air return. Wherein "→" indicates a flow direction of the fresh air intake;
indicating the flow direction of indoor clean air;
indicating indoor deliveryThe direction of wind flow;
indicating the direction of flow of dirty air in the room.
Because the existing indoor return air and the outdoor fresh air are mixed firstly and then enter the heat exchange coil for heat exchange, taking the working condition in summer as an example, the temperature of the indoor return air is lower, the temperature of the outdoor fresh air is higher, although the temperature of the fresh air can be reduced after passing through the air energy heat exchanger, the fresh air is limited by the heat recovery efficiency of the air energy heat exchanger, the temperature after heat exchange is higher than the temperature of the indoor return air inevitably, and the temperatures of the indoor return air and the outdoor fresh air are different, so condensation is easily formed on the wall surface of a cavity body near the air inlet side of.
SUMMERY OF THE UTILITY MODEL
The embodiment of the application adopts the following technical scheme:
in a first aspect, an embodiment of the present application provides an indoor unit including: the air conditioner comprises a shell, a first indoor air return inlet, a second indoor air return inlet, an indoor air outlet, a fresh air inlet and an outdoor air outlet are formed in the shell, a first air duct and a second air duct are formed in the shell, the first air duct is used for communicating the first indoor air return inlet, the fresh air inlet and the indoor air outlet, and the second air duct is used for communicating the second indoor air return inlet and the outdoor air outlet; the first air duct can guide indoor return air into the shell through the first indoor return air inlet and outdoor fresh air into the shell through the fresh air inlet, and finally the indoor return air is guided out from the indoor air outlet, and the second air duct can discharge the indoor return air through the second indoor return air inlet and the outdoor air outlet, so that fresh air introduction and indoor air discharge are realized.
In some embodiments of the present application, the air conditioner further comprises a heat exchanger disposed in the first air duct, and the heat exchanger can exchange heat with indoor return air and outdoor fresh air simultaneously.
In some embodiments of this application, still including being located the heat exchanger with first fan between the indoor air outlet, first fan is leading-in with the room air through first indoor return air inlet, and/or with outdoor new trend leading-in through the new wind gap, and the back of exchanging heat with the heat exchanger again, derives from the indoor air outlet again, can drive outdoor new trend and room air simultaneously through a fan and carry out the circulation flow, on the basis of the inner loop mode, the new trend mode and the mixed wind mode of realizing indoor set, air conditioner structure is simpler.
In some embodiments of the present application, the air conditioner further comprises a second fan disposed in the second air duct, the second fan facilitating the discharge of indoor air from the outdoor air outlet.
In some embodiments of this application, still including installing separator in the first wind channel, the heat exchanger comprises first heat transfer section and the second heat transfer section of mutual concatenation, first heat transfer section is close to first indoor return air inlet sets up, the second heat transfer section is close to the fresh air inlet sets up, the separator will first indoor return air inlet with wind channel between the windward side of first heat transfer section, with the fresh air inlet with wind channel between the windward side of second heat transfer section separates, and indoor return air and outdoor new trend get into the casing after, separate by the separator, respectively with the different sections heat transfer of heat exchanger after the remixing, indoor return air and the outdoor new trend difference in temperature after the heat transfer are less, difficult production condensation.
In some embodiments of this application, first fan is centrifugal fan, the air outlet of first fan with be equipped with the static pressure chamber between the indoor air outlet, the static pressure chamber can collect the air of the air outlet exhaust of first fan, promotes the air-out static pressure to realize remote air supply.
In some embodiments of the present application, the center of the impeller of the first fan is located on an angular bisector of the first heat exchange section of the heat exchanger and the second heat exchange section of the heat exchanger; the wind field distribution of the first heat exchange section and the second heat exchange section in the heat exchanger is close, so that the condition of local overheating or supercooling of the heat exchanger is avoided.
In some embodiments of the present application, a vertical distance C between a center of an impeller of the first fan and a center of the heat exchanger1The vertical distance C between the center of the impeller of the first fan and the first heat exchange section in the heat exchanger2And the impeller center of the first fan exchanges heat with the second heat exchange in the heat exchangerVertical distance of segments C3Satisfies the following conditions: c1＝C2＝C3(ii) a The suction force to each area of the heat exchanger is similar, and the uniformity of the wind field of the heat exchanger is improved, so that the heat exchange efficiency of the heat exchanger is improved.
In some embodiments of the present application, an air outlet of the first fan is disposed opposite to the indoor air outlet; the width of the static pressure cavity in the direction parallel to the air outlet direction of the first fan is 150-200 mm; the length of the static pressure cavity in the direction perpendicular to the air outlet direction of the first fan is 1.2-2 times of the length of the air outlet of the first fan; the air outlet static pressure of the static pressure cavity is larger, and the air supply distance of the indoor unit is increased.
In some embodiments of the present application, further comprising: the air guide structure, the air guide structure with first wind channel the second wind channel all communicates, just the air guide structure with the intercommunication department in first wind channel is close to indoor air outlet, the air guide structure with the intercommunication department in second wind channel is close to the indoor return air inlet of second, and the return air accessible air guide structure of the indoor return air inlet of second gets into in the first wind channel, for example, simultaneously the air inlet through first indoor return air inlet and the indoor return air inlet of second, can increase the intake of indoor set.
In some embodiments of the present application, the indoor unit further includes: the filtering device is arranged in the air guide structure, and the first fan is positioned between the communication position of the air guide structure and the first air channel and the indoor air outlet; and/or the second fan is positioned between the communication position of the air guide structure and the second air duct and the second indoor return air inlet; the first fan, the second fan, or the first fan and the second fan promote indoor return air to be guided into the shell through the second indoor return air inlet, filtered by the filtering device in the air guide structure and then discharged from the indoor air outlet, and the indoor unit can operate in a purification mode.
In some embodiments of the present application, further comprising: the full heat exchanger is internally provided with a first heat exchange flow channel and a second heat exchange flow channel which exchange heat with each other, the first heat exchange flow channel is connected in the first air channel and is positioned between the fresh air inlet and a second heat exchange section of the heat exchanger, and the second heat exchange flow channel is connected in the second air channel; when the outdoor fresh air passes through the first heat exchange flow channel of the total heat exchanger, the outdoor fresh air can exchange heat with the indoor return air entering the second heat exchange flow channel, so that the heat recovery of the indoor return air is realized, the precooling or preheating of the fresh air is realized, and the heat exchange effect is improved.
In some embodiments of the present application, further comprising: the one-way air-permeable membrane is arranged in the second air duct and is positioned between the communication part of the second air duct and the air guide structure and the outdoor air outlet, and the one-way air-permeable membrane can allow air flowing from the second indoor air return inlet to the outdoor air outlet to pass through and form resistance to air flowing from the outdoor air outlet to the second indoor air return inlet; when the indoor unit operates in an internal circulation mode or a purification mode (the air guide structure is in a communicated state), the one-way breathable film can prevent outdoor air from entering the indoor space due to the action of the first fan or the second fan or the first fan and the second fan, and is cheap and low in cost.
In some embodiments of the present application, the air conditioner further comprises a first air valve installed at the first indoor return air inlet, and the first air valve is used for controlling the opening or closing of the first indoor return air inlet.
In some embodiments of the present application, the air conditioner further comprises a second air valve installed at the fresh air opening, and the second air valve is used for controlling the opening or closing of the fresh air opening.
In some embodiments of the present application, the air guiding structure further comprises a third air valve installed at the air guiding structure, and the third air valve is used for controlling connection or disconnection of the air guiding structure, so as to control connection or disconnection of the first air duct and the second air duct.
In a second aspect, an embodiment of the present application further provides an air conditioner, including the indoor unit according to the foregoing embodiment. Because the indoor unit installed in the air conditioner has the same structure as the indoor unit, the air conditioner can obtain the same technical effect, and the description is omitted here.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of an indoor unit of an air conditioner in the prior art;
fig. 2 is a schematic structural diagram of an indoor unit according to an embodiment of the present application;
fig. 3 is a second schematic structural diagram of an indoor unit according to an embodiment of the present application;
fig. 4 is a schematic structural view of an indoor unit in an air mixing mode according to an embodiment of the present application;
fig. 5 is a schematic structural view of an indoor unit in an inner circulation mode according to an embodiment of the present disclosure;
fig. 6 is a schematic structural diagram of an indoor unit in a fresh air mode in the embodiment of the present application;
fig. 7 is a schematic structural view of an indoor unit in the embodiment of the present application when the indoor unit is in the purge mode;
fig. 8 is a perspective view of an indoor unit in the embodiment of the present application;
fig. 9 is a rear view of an indoor unit in the embodiment of the present application;
fig. 10 is a left side view of an indoor unit in the embodiment of the present application;
fig. 11 is a right side view of an indoor unit in the embodiment of the present application;
fig. 12 is a plan view of an indoor unit in the embodiment of the present application;
fig. 13 is a bottom view of the indoor unit in the embodiment of the present application.
Reference numerals:
1-a shell; 110-a first indoor return air inlet; 111-a second indoor return air inlet; 112-indoor air outlet; 113-fresh air port; 114-outdoor air outlet; 2-a heat exchanger; 21-a first heat exchange section; 22-a second heat exchange section; 3-a first fan; 4-a second fan; 5-a separator; 6-a filtration device; 7-total heat exchanger; 8-a one-way breathable film; 9-a first air valve; 10-a second air valve; 11-a third air valve; 12-static pressure cavity.
Detailed Description
The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are only a part of the embodiments of the present application, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; may be a mechanical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.
In the description of the present application, "and/or" is only one kind of association relationship describing an associated object, and means that three kinds of relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist simultaneously, and B exists alone. In addition, the character "/" herein generally indicates that the former and latter related objects are in an "or" relationship.
The air conditioner performs a refrigeration cycle of the air conditioner by using a compressor, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the air that has been conditioned and heat-exchanged.
The compressor compresses a refrigerant gas in a high-temperature and high-pressure state and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, and heat is released to the surrounding environment through the condensation process.
The expansion valve expands the liquid-phase refrigerant in a high-temperature and high-pressure state condensed in the condenser into a low-pressure liquid-phase refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the refrigerant gas in a low-temperature and low-pressure state to the compressor. The evaporator can achieve a cooling effect by heat-exchanging with a material to be cooled using latent heat of evaporation of a refrigerant. The air conditioner can adjust the temperature of the indoor space throughout the cycle.
The outdoor unit of the air conditioner refers to a portion of a refrigeration cycle including a compressor and an outdoor heat exchanger, the indoor unit of the air conditioner includes an indoor heat exchanger, and an expansion valve may be provided in the indoor unit or the outdoor unit.
The indoor heat exchanger and the outdoor heat exchanger serve as a condenser or an evaporator. When the indoor heat exchanger is used as a condenser, the air conditioner is used as a heater in a heating mode, and when the indoor heat exchanger is used as an evaporator, the air conditioner is used as a cooler in a cooling mode.
Referring to fig. 2 to 4 and 8, in some embodiments of the present application, the air conditioner includes a housing 1, a heat exchanger 2, a first fan 3, a second fan 4, and a partition 5, wherein the housing 1 is provided with a first indoor return air inlet 110, a second indoor return air inlet 111, an indoor air outlet 112, a fresh air inlet 113, and an outdoor air outlet 114, a first air duct and a second air duct are formed in the housing 1, the first air duct communicates the first indoor return air inlet 110, the fresh air inlet 113, and the indoor air outlet 112, and the second air duct communicates the second indoor return air inlet 111 with the indoor air outlet 112; the heat exchanger 2 is arranged in the first air duct, the first fan 3 is positioned between the heat exchanger 2 and the indoor air outlet 112, and the second fan 4 is arranged in the second air duct; the partition 5 is installed in the first air duct, the heat exchanger 2 is composed of a first heat exchange section 21 and a second heat exchange section 22 which are spliced with each other, the first heat exchange section 21 is arranged close to the first indoor air return opening 110, the second heat exchange section 22 is arranged close to the fresh air opening 113, and the partition 5 separates the air duct between the first indoor air return opening 110 and the windward side of the first heat exchange section 21 and the air duct between the fresh air opening 113 and the windward side of the second heat exchange section 22.
When the indoor unit in the application operates in the air mixing mode, part of indoor return air enters the first air channel through the first indoor return air inlet 110, outdoor fresh air enters the second air channel through the fresh air inlet 113, due to the blocking of the separator 5, the indoor return air exchanges heat with the first heat exchange section 21 of the heat exchanger 2, the outdoor fresh air exchanges heat with the second heat exchange section 22 of the heat exchanger 2, and then is mixed and is led into the room from the indoor air outlet 112 under the action of the first fan 3, part of the indoor return air enters the second air channel through the second indoor return air inlet 111, and is led out from the outdoor air outlet 114 under the action of the second fan 4, as shown in fig. 4, because the fresh air in front of the heat exchanger 2 is not in contact with the indoor return air, condensation is not easy to generate, and the temperature difference between the indoor return air and the outdoor fresh air after exchanging heat with the heat exchanger 2 is small, the condensation is not easy to.
In the indoor unit operation internal circulation mode in the present application, the indoor return air enters the first air duct through the first indoor return air inlet 110 to exchange heat with the first heat exchange section 21 of the heat exchanger 2, and then is guided out from the indoor air outlet 112 under the action of the first fan 3, as shown in fig. 5.
When the indoor unit in the present application operates in the fresh air mode, outdoor fresh air enters the first air duct through the fresh air inlet 113 to exchange heat with the second heat exchange section 22 of the heat exchanger 2, and then is guided out from the indoor air outlet 112 under the action of the first fan 3, and indoor return air enters the second air duct through the second indoor return air inlet 111 and is guided out from the outdoor air outlet 114 under the action of the second fan 4, as shown in fig. 6.
The indoor unit of the present application is a ceiling type indoor unit installed on a ceiling of an indoor space, and the casing 1 is an indoor unit casing provided in the indoor space in case of a split type air conditioner. The housing 1 is installed in an indoor ceiling, and includes a front surface, a rear surface, a bottom surface defining a bottom configuration, side surfaces disposed around the bottom surface, and a top surface defining a top appearance.
The utility model provides an air conditioning indoor unit combines the function of indoor temperature control and new trend, has the advantage of practicing thrift space, convenient to use.
The first fan 3 may be a centrifugal fan or a cross-flow fan. In some embodiments of the present application, the first fan 3 is a centrifugal fan, the static pressure cavity 12 is disposed between the air outlet of the first fan 3 and the indoor air outlet 112, air exhausted from the air outlet of the first fan 3 is collected in the static pressure cavity 12, and then exhausted from the indoor air outlet 112, because the air pressure collected in the static pressure cavity 12 is increased, the static pressure of the outlet air of the indoor unit can be increased, thereby realizing remote air supply. For example, the static pressure chamber 12 may be formed by a portion of the air duct wall of the first air duct, which hermetically connects the air outlet of the first fan 3 with the indoor air outlet 112.
Since the first fan 3 is close to a certain area of the heat exchanger 2, the wind field of other areas of the heat exchanger 2 is weak. Thus, with reference to fig. 3, in some possible embodiments of the present application the relative position of the first fan 3 and the heat exchanger 2 is such that: the impeller center of first fan 3 is located on the angular bisector of first heat transfer section 21 of heat exchanger 2 and the second heat transfer section 22 of heat exchanger 2, and angle a equals angle B in fig. 3, and the impeller center spacing of first heat transfer section 21 in the heat exchanger 2, second heat transfer section 22 in the heat exchanger 2 and first fan 3 equals, and the wind field distribution of first heat transfer section 21 and the wind field distribution of second heat transfer section 22 are close, do benefit to the heat exchanger heat transfer, and can avoid the condition that local overheat or subcooling appears in heat exchanger 2.
In order to ensure the heat exchange effect at the joint of the first heat exchange section 21 and the second heat exchange section 22 in the heat exchanger, in some embodiments of the present application, the vertical distance C between the center of the impeller of the first fan 3 and the center of the heat exchanger 21The vertical distance C between the center of the impeller of the first fan 3 and the first heat exchange section 21 in the heat exchanger 22And the vertical distance C between the center of the impeller of the first fan 3 and the second heat exchange section 22 in the heat exchanger 23Satisfies the following conditions: c1＝C2＝C3As shown in fig. 3, the perpendicular distance between the splicing position of the two heat exchange sections and the center of the impeller of the first fan 3, the perpendicular distance between the first heat exchange section 21 and the center of the impeller of the first fan 3, and the perpendicular distance between the second heat exchange section 22 and the center of the impeller of the first fan 3 are ensured to be equal, the suction force to each area of the heat exchanger 2 is close, the uniformity of the wind field of the heat exchanger 2 is improved, and therefore the heat exchange efficiency of the heat exchanger 2 is improved.
Because the volume of the static pressure cavity 12 is too large, the air outlet static pressure existsThe loss is not beneficial to air supply, and the volume of the shell 1 is larger; the volume of the static pressure cavity 12 is too small, so that the effect of air outlet and pressure accumulation cannot be achieved. Therefore, referring to fig. 2 and 3, in the embodiment of the present application, the air outlet of the first fan 3 is disposed opposite to the indoor air outlet 112, and the width W of the static pressure cavity 12 in the direction parallel to the air outlet direction of the first fan 3 is 150mm to 200 mm; the length L of the static pressure cavity 12 in the direction perpendicular to the air outlet direction of the first fan 31Is the length L of the air outlet of the first fan 321.2-2 times, the height of the static pressure cavity 12 can be the same as the thickness of the shell 1, the air outlet pressure of the static pressure cavity 12 is larger, and the air supply of the indoor unit is improved.
In some embodiments of the present application, the indoor unit further includes a wind guiding structure, the wind guiding structure is communicated with both the first wind channel and the second wind channel, a communication position of the wind guiding structure and the first wind channel is close to the indoor air outlet 112, a communication position of the wind guiding structure and the second wind channel is close to the second indoor air return opening 111, and return air from the second indoor air return opening 111 can enter the first wind channel through the wind guiding structure.
It should be noted that: the air guide structure may be formed in various manners.
For example, a part of the wall surface of the second air duct near the second indoor air return opening 111 and a part of the wall surface of the first air duct near the indoor air outlet opening 112 are common walls, and the air guide structure is an air guide opening formed in the common walls, so that the structure is simple.
For another example, the air guiding structure is an air guiding pipe, one end of the air guiding pipe is communicated with one end of the second air duct close to the second indoor air return opening 111, and the other end of the air guiding pipe is communicated with one end of the first air duct close to the indoor air outlet 112.
In some possible embodiments of the present application, the communication between the air guiding structure and the first air duct is located between the first indoor air return opening 110 and the air inlet side of the heat exchanger 2. When the indoor unit operates in the internal circulation mode, the second indoor air return opening 111 and the first indoor air return opening 110 can be opened, the air guide structure is in a communicated state, the first indoor air return opening 110 and the second indoor air return opening 111 simultaneously perform air inlet heat exchange, and the air inlet amount of the indoor unit is large.
Of course, the communication position between the air guiding structure and the first air duct may also be located between the heat exchanger 2 and the indoor air outlet 112, as shown in fig. 2.
In order to improve the quality of indoor air, in some embodiments of the present application, the indoor unit further includes a filtering device 6, the filtering device 6 is installed in the air guiding structure, and the first fan 3 is located between the air guiding structure and the first air duct, and the indoor air outlet 112; or the second fan 4 is positioned between the communication position of the air guide structure and the second air duct and the second indoor return air inlet 111; or the first fan 3 is positioned between the communication position of the air guide structure and the first air duct and the indoor air outlet 112, and the second fan 4 is positioned between the communication position of the air guide structure and the second air duct and the second indoor air return opening 111. The first fan 3, the second fan 4, or the first fan 3 and the second fan 4 promote to guide the indoor return air into the casing 1 through the second indoor return air inlet 111, filter the indoor return air through the filtering device 6 in the air guiding structure, and then discharge the indoor return air from the indoor air outlet 112, and the filtering device 6 filters impurities in the indoor air, that is, the indoor unit operates in the purification mode, as shown in fig. 2 and 7. Therefore, the indoor unit of this application still has air purifier's function, can further integrate the air treatment function, improves the treatment effeciency of room air, like carry out simultaneously refrigerate and filtering capability, or heat and filtering capability.
In some embodiments of the present application, the indoor unit further includes a total heat exchanger 7, a first heat exchange flow channel and a second heat exchange flow channel which exchange heat with each other are formed inside the total heat exchanger 7, the first heat exchange flow channel is connected in the first air duct, the first heat exchange flow channel is located between the fresh air port 113 and the second heat exchange section 22 of the heat exchanger 2, the second heat exchange flow channel is connected in the second air duct, outdoor fresh air can exchange heat with indoor return air entering the second heat exchange flow channel when passing through the first heat exchange flow channel of the total heat exchanger 7, so as to achieve heat recovery of the indoor return air and achieve precooling or preheating of the fresh air; and then the heat exchange is carried out with the second heat exchange section 22 of the heat exchanger 2, so that the temperature of the outdoor fresh air is further improved, the heat exchange effect of the indoor unit of the air conditioner is better, and the energy is saved. When the total heat exchanger 7 is opened, the fresh air mode is changed into a total heat exchange mode, and the air conditioner is suitable for being used under the condition that the temperature difference between outdoor fresh air and indoor air is large; when the temperature difference between the outdoor fresh air and the indoor air is small, a fresh air mode can be adopted.
It should be noted that: for the embodiment with the air guiding structure, the second heat exchange flow channel is located between the connection position of the second air channel and the air guiding structure and the outdoor air outlet 114, that is, in the purification mode, the indoor return air does not need to pass through the total heat exchanger 7, the length of the purification air channel is shortened, and the filter element cleaning cycle or the replacement cycle of the total heat exchanger 7 is shortened because the impurities of the indoor air are prevented from accumulating in the total heat exchanger 7.
According to the specific design of the first air duct and the second air duct, the first indoor air return opening 110, the second indoor air return opening 111, the indoor air outlet 112, the fresh air opening 113 and the outdoor air outlet 114 are respectively arranged on different surfaces or the same surface of the casing 1.
For example, referring to fig. 8 to 13, the first indoor return air inlet 110, the second indoor return air inlet 111, and the indoor air outlet 112 are located on the same side surface of the casing 1, and the indoor air outlet 112 is located between the first indoor return air inlet 110 and the second indoor return air inlet 111; the outdoor air outlet 114 and the fresh air inlet 113 are located on the same side surface of the casing 1, and the side surface of the fresh air inlet 113 is different from the side surface of the first indoor return air inlet 110. Since the first heat exchange flow passage and the second heat exchange flow passage in the total heat exchanger 7 are arranged in a crossing manner, the side surface where the first indoor return air inlet 110 is located is opposite to the side surface where the fresh air inlet 113 is located, the first indoor return air inlet 110 is opposite to the outdoor air outlet 114, and the fresh air inlet 113 is opposite to the second indoor return air inlet 111.
When the indoor unit operates in the purification mode, because the air guide structure is in a communicated state, suction is formed on both the indoor air return opening and the outdoor air outlet 114, so as to prevent outdoor air from entering the casing 1 or the indoor space from the outdoor air outlet 114, in some possible embodiments of the present application, an air valve is installed at the outdoor air outlet 114, the opening or closing of the outdoor air outlet 114 is controlled by the air valve, and when the indoor unit operates in the purification mode, the controller of the indoor unit can control the air valve to close the outdoor air outlet 114; in other possible embodiments of the present application, the indoor unit further includes a one-way air permeable film 8, the one-way air permeable film 8 is installed in the second air duct and located between the communication position of the second air duct and the air guiding structure and the outdoor air outlet 114, the one-way air permeable film 8 can form resistance to air entering through the outdoor air outlet 114, and allow air entering through the second indoor air return port 111 to pass through, so as to prevent outdoor air from entering the casing 1 or the indoor space through the outdoor air outlet 114, the one-way air permeable film 8 is cheap, and the manufacturing cost of the indoor unit can be reduced, as shown in fig. 2.
Illustratively, the one-way air-permeable membrane 8 is adhered to the inlet of the second heat exchange flow channel in the total heat exchanger 7, so as to prevent the outdoor air from entering the total heat exchanger 7.
Similarly, in some embodiments of the present application, the indoor unit further includes a first air valve 9, the first air valve 9 is installed at the first indoor air return opening 110, and the first air valve 9 can control the opening or closing of the first indoor air return opening 110, so as to control whether the indoor unit enters the internal circulation mode.
Illustratively, in some embodiments of the present application, the indoor unit further includes a second air valve 10, the second air valve 10 is installed at the fresh air port 113, and the second air valve 10 can control opening or closing of the fresh air port 113, so as to control whether to introduce fresh air into the room.
Similarly, in some embodiments of the present application, the indoor unit further includes a third air valve 11, the third air valve 11 is installed in the air guiding structure, and the third air valve 11 can be connected or disconnected with the air guiding structure, so as to control connection or disconnection between the first air channel and the second air channel, and further control whether to purify the indoor air.
The partition 5 may be a partition plate, a partition pipe, or any other partition device capable of performing a partition function. In some embodiments of the present application, the partition 5 is a partition plate, and the partition plate may be made of a steel plate.
In some possible embodiments of the present application, the second fan 4 is a centrifugal fan, and the air volume and the air pressure of the centrifugal fan are both large, so that the centrifugal fan is suitable for being applied to an application occasion with a large air volume. Of course, the second fan 4 may be a cross-flow fan.
Because heat exchanger 2 in this application needs two heat transfer sections to splice, heat exchanger 2 adopts the coil pipe heat exchanger in the embodiment of this application, can be according to the design in wind channel, and various shapes are made to coiling as required, and the manufacturing degree of difficulty is low, heat transfer performance is good, and has better corrosion resisting property. Furthermore, in some embodiments of the present application, the heat exchanger 2 of the indoor unit is a plate heat exchanger.
The embodiment of the application also comprises an air conditioner which comprises the indoor unit in the embodiment. Because the indoor unit installed in the air conditioner has the same structure as the indoor unit, the air conditioner can obtain the same technical effect, and the description is omitted here.
In the description herein, particular features, structures, materials, or characteristics may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (10)
1. An indoor unit, comprising:
the air conditioner comprises a shell, a first indoor air return inlet, a second indoor air return inlet, an indoor air outlet, a fresh air inlet and an outdoor air outlet are formed in the shell, a first air duct and a second air duct are formed in the shell, the first air duct is used for communicating the first indoor air return inlet, the fresh air inlet and the indoor air outlet, and the second air duct is used for communicating the second indoor air return inlet and the outdoor air outlet;
the heat exchanger is arranged in the first air duct;
the first fan is positioned between the heat exchanger and the indoor air outlet;
the second fan is arranged in the second air duct;
the partition is installed in the first air duct, the heat exchanger is composed of a first heat exchange section and a second heat exchange section which are spliced with each other, the first heat exchange section is arranged close to the first indoor air return opening, the second heat exchange section is arranged close to the fresh air opening, and the partition separates an air duct between the first indoor air return opening and the windward side of the first heat exchange section from an air duct between the fresh air opening and the windward side of the second heat exchange section;
the first fan is a centrifugal fan, and a static pressure cavity is arranged between an air outlet of the first fan and the indoor air outlet.
2. The indoor unit of claim 1, wherein the center of the impeller of the first fan is located on an angular bisector of the first heat exchange section of the heat exchanger and the second heat exchange section of the heat exchanger.
3. The indoor unit of claim 1, wherein a vertical distance C between a center of an impeller of the first fan and a center of the heat exchanger1The vertical distance C between the center of the impeller of the first fan and the first heat exchange section in the heat exchanger2And the vertical distance C between the center of the impeller of the first fan and the second heat exchange section in the heat exchanger3Satisfies the following conditions: c1＝C2＝C3。
4. The indoor unit according to claim 1, wherein an outlet of the first fan is disposed opposite to the indoor outlet;
the width of the static pressure cavity in the direction parallel to the air outlet direction of the first fan is 150-200 mm;
the length of the static pressure cavity in the direction perpendicular to the air outlet direction of the first fan is 1.2-2 times of the length of the air outlet of the first fan.
5. The indoor unit according to claim 1, further comprising:
the air guide structure is communicated with the first air channel and the second air channel, the communication position of the air guide structure and the first air channel is close to the indoor air outlet, and the communication position of the air guide structure and the second air channel is close to the second indoor return air inlet;
the filtering device is arranged in the air guide structure, and the first fan is positioned between the communication position of the air guide structure and the first air channel and the indoor air outlet; and/or the second fan is positioned between the communication position of the air guide structure and the second air duct and the second indoor return air inlet.
6. The indoor unit according to claim 5, further comprising:
the full heat exchanger is internally provided with a first heat exchange flow channel and a second heat exchange flow channel which exchange heat with each other, the first heat exchange flow channel is connected in the first air channel and is positioned between the fresh air inlet and the second heat exchange section of the heat exchanger, and the second heat exchange flow channel is connected in the second air channel.
7. The indoor unit according to claim 5 or 6, further comprising:
the one-way breathable film is installed in the second air channel and located at the communication position of the second air channel and the air guide structure and between the outdoor air outlets, the one-way breathable film can allow air flowing from the second indoor air return opening to the outdoor air outlets to pass through, and meanwhile resistance is formed on air flowing from the outdoor air outlets to the second indoor air return opening.
8. The indoor unit according to claim 1, further comprising:
the first air valve is arranged at the first indoor air return opening;
and the second air valve is arranged at the fresh air port.
9. The indoor unit according to claim 5 or 6, further comprising:
and the third air valve is arranged in the air guide structure.
10. An air conditioner characterized by comprising the indoor unit according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331868.0U CN211781468U (en) | 2020-03-17 | 2020-03-17 | Indoor unit and air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020331868.0U CN211781468U (en) | 2020-03-17 | 2020-03-17 | Indoor unit and air conditioner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211781468U true CN211781468U (en) | 2020-10-27 |
Family
ID=72930913
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020331868.0U Active CN211781468U (en) | 2020-03-17 | 2020-03-17 | Indoor unit and air conditioner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211781468U (en) |
-
2020
- 2020-03-17 CN CN202020331868.0U patent/CN211781468U/en active Active
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