CN217540891U - Indoor unit and air conditioner - Google Patents

Abstract

The application provides an indoor unit and air conditioner, include: the shell is internally provided with a fresh air duct and a heat exchange air duct; both ends of the fresh air duct are provided with an air inlet and an air outlet, a first heat exchanger and a first fan are arranged in the fresh air duct; an air return port and an air outlet are arranged at two ends of the heat exchange air duct, and a second heat exchanger and a second fan are arranged in the heat exchange air duct; the end of the fresh air duct provided with the air outlet is communicated with the heat exchange air duct, and the air outlet is positioned between the air outlet and the second heat exchanger. The heat exchanger and the fan are arranged in the fresh air duct and the heat exchange air duct, and the downstream of the fresh air duct and the downstream of the heat exchange air duct are communicated, so that the fresh air and the air-conditioning air are discharged to the indoor through the air outlet. On one hand, the temperature of the air flow in the fresh air duct can be independently adjusted, and the phenomenon that condensation is generated in the air duct due to overlarge temperature difference of the two air ducts is avoided; on the other hand, the fresh air and the air conditioning air are mixed for air outlet, so that the air outlet flow temperature of the indoor unit can be kept consistent, and the large fluctuation of the indoor environment temperature is avoided.

Description

Indoor unit and air conditioner

Technical Field

The application relates to the technical field of air conditioning equipment, in particular to an indoor unit and an air conditioner.

Background

The fresh air conditioner is an air conditioner with a fresh air function, and the fresh air conditioner is generally integrated with a fresh air module on the basis of a common air conditioner, so that the fresh air conditioner has the heat exchange function of a conventional air conditioner and the fresh air function of a fresh air fan. The fresh air conditioner has rich and practical functions and is widely favored by users.

When the fresh air conditioner is started in the air conditioning mode and the fresh air mode, due to the introduction of outdoor air, air flows with different temperatures are blown to users at the same time, and the indoor temperature fluctuation range is large; the user may blow airflow at different temperatures, which is likely to cause symptoms such as headache or cold, and the user experience is poor.

SUMMERY OF THE UTILITY MODEL

The application provides an indoor unit and an air conditioner to solve the technical problem that a fresh air conditioner easily causes the fluctuation of indoor environment temperature by a wide margin in the prior art.

In one aspect, the present application provides an indoor unit, including:

the shell is internally provided with a fresh air duct and a heat exchange air duct;

an air inlet and an air outlet are formed in two ends of the fresh air duct, and a first heat exchanger and a first fan are installed in the fresh air duct;

an air return port and an air outlet are arranged at two ends of the heat exchange air duct, and a second heat exchanger and a second fan are arranged in the heat exchange air duct;

the fresh air duct is provided with one end of the air outlet is communicated with the heat exchange air duct, and the air outlet is located between the air outlet and the second heat exchanger.

In one possible implementation manner of the present application, the first heat exchanger is arranged in parallel with the second heat exchanger.

In a possible implementation manner of the present application, the first heat exchanger is connected in series with the second heat exchanger, two ends of the first heat exchanger are communicated with a bypass pipeline, and a bypass valve is arranged on the bypass pipeline.

In a possible implementation manner of the present application, the indoor unit includes at least one flute pipe, and the flute pipe is communicated with the air outlet.

In one possible implementation manner of the present application, at least a portion of the flute-shaped pipe is located in the heat exchange air duct.

In a possible implementation manner of the application, the air return opening is provided with an air door, and the air door is used for opening and closing the air return opening.

In one possible implementation manner of the present application, a ratio of heat exchange areas of the first heat exchanger and the second heat exchanger is a, and a ratio of air supply volumes of the first fan and the second fan is B, where a and B satisfy: A/B is more than or equal to 0.8 and less than or equal to 1.2.

In one possible implementation manner of the present application, the first fan and the first heat exchanger are sequentially disposed in the fresh air duct along a fresh air flow direction; and/or

The second fan and the second heat exchanger are sequentially arranged in the heat exchange air duct along the heat exchange flow direction.

In a possible implementation manner of the application, a humidification module is further arranged in the fresh air duct.

On the other hand, this application still provides an air conditioner, including outdoor unit and as above indoor set, the outdoor unit with indoor set intercommunication each other.

The application provides a pair of indoor unit and air conditioner includes: the shell is internally provided with a fresh air duct and a heat exchange air duct; an air inlet and an air outlet are arranged at two ends of the fresh air duct, and a first heat exchanger and a first fan are arranged in the fresh air duct; the two ends of the heat exchange air duct are provided with an air return inlet and an air outlet, and a second heat exchanger and a second fan are arranged in the heat exchange air duct; the end of the fresh air duct provided with the air outlet is communicated with the heat exchange air duct, and the air outlet is positioned between the air outlet and the second heat exchanger. The heat exchanger and the fan are arranged in the fresh air duct and the heat exchange duct, and the downstream of the fresh air duct and the downstream of the heat exchange duct are communicated, so that the fresh air and the air conditioning air are discharged to the indoor through the air outlet of the heat exchange duct. On one hand, the temperature of air flow in the fresh air duct can be independently adjusted, and the phenomenon that condensation is generated in the air ducts due to overlarge temperature difference of the two air ducts is avoided; on the other hand, the fresh air and the air conditioning air are mixed for air outlet, so that the air outlet flow temperature of the indoor unit can be kept consistent, and the large fluctuation of the indoor environment temperature is avoided.

Drawings

The technical solution and other advantages of the present application will become apparent from the detailed description of the embodiments of the present application with reference to the accompanying drawings.

Fig. 1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present application;

fig. 2 is another schematic structural diagram of an air conditioner provided in an embodiment of the present application;

fig. 3 is a schematic diagram illustrating a refrigerant flow in a cooling mode of the air conditioner according to an embodiment of the present disclosure;

fig. 4 is a schematic diagram illustrating a refrigerant flow in a heating mode of an air conditioner according to an embodiment of the present disclosure.

Reference numerals:

the air conditioner comprises an air conditioner 100, an indoor unit 200, a shell 210, a fresh air duct 220, an air inlet 221, an air outlet 222, a first fan 223, a first heat exchanger 224, a heat exchange air duct 230, an air return opening 231, an air outlet 232, a second fan 233, a second heat exchanger 234, a refrigerant pipe 300, a branch pipe 310, a valve 311, a bypass pipeline 320, a bypass valve 321, a condenser 400, a compressor 500, a fresh air flow direction F1 and a heat exchange flow direction F2.

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. It is to be understood that the embodiments described are only a few embodiments of the present application and not all 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 understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," and the like are used in the orientations and positional relationships indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated in a particular manner, and are not to be construed as limiting the present application. Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

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 mechanically connected, may be electrically connected or may be in communication with each other; they may be directly connected or indirectly connected through intervening media, or may be connected through the use of two elements or the interaction of two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.

In this application, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact of the first and second features, or may comprise contact of the first and second features not directly but through another feature in between. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature.

The following disclosure provides many different embodiments or examples for implementing different features of the application. To simplify the disclosure of the present application, specific example components and arrangements are described below. Of course, they are merely examples and are not intended to limit the present application. Further, the present application may repeat reference numerals and/or reference letters in the various examples for simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or arrangements discussed. In addition, examples of various specific processes and materials are provided herein, but one of ordinary skill in the art may recognize applications of other processes and/or use of other materials.

Referring to fig. 1 to 4, an indoor unit 200 according to an embodiment of the present application includes: a casing 210, in which a fresh air duct 220 and a heat exchange duct 230 are formed; an air inlet 221 and an air outlet 222 are arranged at two ends of the fresh air duct 220, and a first heat exchanger 224 and a first fan 223 are arranged in the fresh air duct 220; an air return opening 231 and an air exhaust opening 232 are arranged at two ends of the heat exchange air duct 230, and a second heat exchanger 234 and a second fan 233 are arranged in the heat exchange air duct 230; one end of the fresh air duct 220, which is provided with an air outlet 222, is communicated with the heat exchange air duct 230, and the air outlet 222 is located between an air outlet 232 and a second heat exchanger 234.

It should be noted that the air inlet 221 of the fresh air duct 220 is disposed at the outdoor side, the air outlet 222 is disposed at the indoor side, and fresh air at the outdoor side enters the fresh air duct 220 from the air inlet 221 and flows out from the air outlet 222, that is, the direction of the fresh air flowing from the air inlet 221 to the air outlet 222 in the fresh air duct 220 is the fresh air flowing direction F1; the air return 231 and the air exhaust 232 of the heat exchange air duct 230 are both disposed indoors, and the indoor air enters the heat exchange air duct 230 from the air return 231 and flows out to the indoor from the air exhaust 232, that is, the direction of the indoor air flowing from the air return 231 to the air exhaust 232 in the heat exchange air duct 230 is the heat exchange flow direction F2. The heat exchange duct 230 serves to circulate indoor air and change the temperature of the indoor air, i.e., a duct of air-conditioned air.

It should be noted that the indoor unit 200 provided in the embodiment of the present application may be a wall-mounted unit, and the fresh air duct 220 and the heat exchange air duct 230 of the wall-mounted unit are generally arranged left and right, and are horizontally disposed, so that the airflow in the fresh air duct 220 can enter the heat exchange air duct 230. The indoor unit 200 may be a cabinet, which is not limited herein.

It is understood that the air outlet 222 is located between the air outlet 232 and the second heat exchanger 234, and the fresh air duct 220 is connected to the downstream of the heat exchange air duct 230 according to the air flow direction in the heat exchange air duct 230.

The heat exchanger and the blower are installed in the fresh air duct 220 and the heat exchange air duct 230, and the downstream of the fresh air duct 220 and the downstream of the heat exchange air duct 230 are communicated, so that the fresh air and the air-conditioning air are both discharged to the indoor through the air outlet 232 of the heat exchange air duct 230. On one hand, the temperature of the air flow in the fresh air duct 220 can be independently adjusted, and condensation in the air ducts caused by overlarge temperature difference of the two air ducts is avoided; on the other hand, the fresh air and the air conditioning air are mixed for air outlet, so that the temperature of the air outlet flow of the indoor unit 200 can be kept consistent, and the large fluctuation of the indoor environment temperature is avoided.

Specifically, the fresh air duct 220 is L-shaped, that is, the downstream of the fresh air duct 220 is bent toward the heat exchange air duct 230, so as to guide the fresh air to flow to the heat exchange air duct 230, thereby reducing the air loss.

Optionally, the fresh air duct 220 is provided with two air outlets 222, and the two air outlets 222 are oppositely disposed on two sides of the heat exchange air duct 230.

Thus, a large air flow in the fresh air duct 220 can be divided into two smaller air flows, and the two smaller air flows are blown to the heat exchange air duct 230 relatively, so that the impact on the air flow in the heat exchange air duct 230 can be reduced, and the generation of turbulence and noise can be effectively avoided; and the mixing of the fresh air and the air conditioning air can be more uniform, and the user experience is improved.

Further, in other embodiments, the fresh air duct 220 may further include a plurality of air outlets 222, for example, 3, or 4, etc., which are not limited herein. And the arrangement positions of the plurality of air outlets 222 are not limited too much.

Specifically, the first fan 223 may be a centrifugal fan (not shown), and the second fan 233 may be a cross-flow fan (not shown).

In some embodiments, the first heat exchanger 224 is disposed in parallel with the second heat exchanger 234.

It should be noted that the split type air conditioner generally includes an indoor unit 200 and an outdoor unit. When the air conditioner 100 refrigerates, the indoor unit 200 communicates with the outdoor unit through the refrigerant pipe 300, and the compressor 500 installed in the outdoor unit compresses a gaseous refrigerant into a high-temperature and high-pressure gaseous refrigerant, and then sends the gaseous refrigerant to the condenser 400 installed in the outdoor unit to dissipate heat, so that the gaseous refrigerant becomes a normal-temperature and high-pressure liquid refrigerant; then, the liquid refrigerant enters the first heat exchanger 224 and the second heat exchanger 234 through the refrigerant pipe 300, and as the refrigerant is branched from the refrigerant pipe 300 and reaches a plurality of flow paths in the first heat exchanger 224 and the second heat exchanger 234, the space is suddenly increased, the pressure is reduced, the liquid refrigerant is vaporized and changed into a gaseous low-temperature refrigerant, so that a large amount of heat is absorbed, and the surface temperature of the first heat exchanger 224 and the second heat exchanger 234 is reduced; indoor air is blown through the first heat exchanger 224 under the action of the first fan 223, indoor air is blown through the second heat exchanger 234 under the action of the second fan 233, and then both the heat exchange air duct 230 and the fresh air duct 220 can blow out cold air; finally, the gaseous refrigerant changed into the normal temperature after absorbing heat flows back to the compressor 500 through the refrigerant pipe 300, and the cycle is repeated to continuously convey the low-temperature air flow to the room. In addition, the heating process of the indoor unit 200 is opposite to the above and is a prior art, and will not be described herein too much.

The first heat exchanger 224 and the second heat exchanger 234 are installed in parallel on the refrigerant pipe 300, that is, the refrigerant pipe 300 is divided into two branch pipes 310 connected in parallel, and the first heat exchanger 224 and the second heat exchanger 234 are installed on any one of the branch pipes 310. When any one of the first heat exchanger 224 and the second heat exchanger 234 is damaged, the normal operation of the other heat exchanger is not affected, and the operation reliability of the indoor unit 200 is improved.

Further, valves 311 may be respectively installed on the two branch pipes 310 to control whether to deliver the refrigerant to the first heat exchanger 224 and/or the second heat exchanger 234, or to control the amount of the refrigerant delivered to the first heat exchanger 224 and/or the second heat exchanger 234.

Therefore, a user can control whether the first heat exchanger 224 and/or the second heat exchanger 234 are opened or not as required, and adjust the temperature of the airflow blown out from the two air ducts, so that the indoor unit 200 is more flexible to use, and the user experience is improved.

In some embodiments, the first heat exchanger 224 is disposed in series with the second heat exchanger 234, and a bypass pipe 320 is connected to both ends of the first heat exchanger 224, and a bypass valve 321 is disposed on the bypass pipe 320.

The first heat exchanger 224 and the second heat exchanger 234, which are arranged in series, can reduce the length of the refrigerant pipe 300, have a simple structure, and reduce the manufacturing cost of the indoor unit 200.

And the bypass pipeline 320 is arranged on the first heat exchanger 224, and when a user only needs to use the air conditioning function, the bypass pipeline 320 can be opened through the bypass valve 321, so that the refrigerant bypasses the first heat exchanger 224 and directly enters the second heat exchanger 234, and the heat exchange efficiency of the heat exchange air duct 230 is improved.

In some embodiments, the indoor unit 200 includes at least one flute-shaped duct (not shown) that communicates with the outlet vents 222.

It should be noted that the flute pipe is a cylindrical hollow pipe, and the side surface of the flute pipe is provided with a plurality of through holes.

By arranging the flute-shaped pipe at the air outlet 222, a large airflow in the fresh air duct 220 can be divided into a plurality of smaller airflows which are sent into the heat exchange air duct 230, so that the impact on the airflows in the heat exchange air duct 230 can be reduced, and the generation of turbulence and noise can be effectively avoided; and the mixing of fresh air and air conditioning air can be more uniform, and the user experience is improved.

Further, in other embodiments, the air outlet 222 may also be provided with two flute pipes, or three flute pipes, etc., which are not limited herein.

In some embodiments, at least some of the flute tubes are located within the heat exchange air duct 230.

It can be understood that the cross-flow fan is installed in the heat exchange air duct 230 of the wall-mounted unit, so the air outlet 232 is mostly rectangular; if the heat exchange air duct 230 and the fresh air duct 220 are arranged left and right, the fresh air is difficult to mix with the air conditioning air on the side far away from the air outlet 222.

Through stretching into heat transfer wind channel 230 with the flute venturi tube in, can prolong the transport distance of new trend for new trend and air conditioner wind can the intensive mixing, avoid the air-out temperature difference of the different regions of gas vent too big, user experience is better.

Particularly, as mentioned above, the fresh air duct 220 may be provided with two air outlets 222, the two air outlets 222 are oppositely disposed on two sides of the heat exchange air duct 230, and two ends of the flute tube are respectively communicated with the two air outlets 222. The air outlet of the fresh air is more uniform, and the fresh air and the air conditioner air are mixed more fully.

In some embodiments, the air return opening 231 is provided with a damper (not shown) for opening and closing the air return opening 231.

It should be noted that, when the user only opens the fresh air function, because the fresh air duct 220 is communicated with the heat exchange air duct 230, a negative pressure region is formed in the heat exchange air duct 230 under the influence of the rapid flow of the fresh air flow, so that the heat exchange air duct 230 sucks in part of the indoor air through the air return 231, and the fresh air effect is influenced.

Through setting up the air door at return air inlet 231, when the user only opened new trend function, can utilize the air door to close return air inlet 231, avoid heat transfer wind channel 230 to inhale indoor air, improve the air supply volume in new trend wind channel 220.

In some embodiments, the ratio of the heat exchange area of the first heat exchanger 224 to the second heat exchanger 234 is a, and the ratio of the air volume of the first fan 223 to the second fan 233 is B, where a and B satisfy: A/B is more than or equal to 0.8 and less than or equal to 1.2.

By setting the ratio of the heat exchange area of the first heat exchanger 224 to the heat exchange area of the second heat exchanger 234 to the ratio of the air supply amount of the first fan 223 to the air supply amount of the second fan 233 to be in direct proportion, the influence of the introduction of fresh air on the temperature of air-conditioned air can be reduced, and the condensation phenomenon caused by air mixing can be avoided.

Further, in other embodiments, a and B may also satisfy: 0.5 & lt, A/B & lt, 0.8, or 1.2 & lt, A/B & lt, 1.5, etc., without being limited thereto.

In some embodiments, the first fan 223 and the first heat exchanger 224 are sequentially disposed in the fresh air duct 220 along the fresh air flow direction F1; and/or the second fan 233 and the second heat exchanger 234 are sequentially disposed in the heat exchange air duct 230 along the heat exchange flow direction F2.

That is, the first fan 223 is disposed upstream of the fresh air duct 220 with respect to the first heat exchanger 224, and the second fan 233 is disposed upstream of the heat exchange air duct 230 with respect to the second heat exchanger 234. The first fan 223 can directly blow to the first heat exchanger 224 and the second fan 233 can directly blow to the second heat exchanger 234, and the air supply amount of the fresh air duct 220 and the heat exchange air duct 230 is increased.

Further, in other embodiments, the first heat exchanger 224 and the first fan 223 may also be sequentially disposed in the fresh air duct 220 along the fresh air flow direction F1; and/or the second heat exchanger 234 and the second fan 233 may also be disposed in the heat exchange air duct 230 in sequence along the heat exchange flow direction F2. And are not intended to be unduly limited herein.

In some embodiments, a humidification module (not shown) is further disposed in the fresh air duct 220.

Through set up the humidification module in new trend wind channel 220, the user can open new trend humidification function in needs, can provide the better new trend of humidity for the user, improves user experience.

Alternatively, the humidifying module may be a wet membrane (not shown). The structure is simple, and the volume of the indoor unit 200 can be reduced.

Further, in other embodiments, the humidification module may also be an atomizing humidifier, which is not limited herein.

In some embodiments, a purification module (not shown) may be further disposed in the fresh air duct 220 and/or the heat exchange air duct 230 for filtering the air conditioning air and the outdoor fresh air, which is not limited herein.

The embodiment of the present application further provides an air conditioner 100, which includes an outdoor unit and the indoor unit 200 as described above, where the outdoor unit and the indoor unit 200 are communicated with each other. Because this display device has above-mentioned display panel, consequently has all the same beneficial effects, the utility model discloses no longer describe herein.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to the related descriptions of other embodiments.

The indoor unit 200 and the air conditioner 100 provided in the embodiment of the present application are described in detail above, and specific examples are applied herein to explain the principle and the embodiment of the present application, and the description of the above embodiments is only used to help understand the technical solution and the core idea of the present application; those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications or substitutions do not depart from the spirit and scope of the present disclosure as defined by the appended claims.

Claims (10)

1. An indoor unit, comprising:

the shell is internally provided with a fresh air duct and a heat exchange duct;

an air inlet and an air outlet are formed in two ends of the fresh air duct, and a first heat exchanger and a first fan are installed in the fresh air duct;

an air return port and an air outlet are arranged at two ends of the heat exchange air duct, and a second heat exchanger and a second fan are arranged in the heat exchange air duct;

the fresh air duct is provided with one end of the air outlet is communicated with the heat exchange air duct, and the air outlet is located between the air outlet and the second heat exchanger.

2. The indoor unit of claim 1, wherein the first heat exchanger is arranged in parallel with the second heat exchanger.

3. The indoor unit of claim 1, wherein the first heat exchanger and the second heat exchanger are arranged in series, and bypass pipelines are communicated with two ends of the first heat exchanger, and bypass valves are arranged on the bypass pipelines.

4. The indoor unit of claim 1, wherein the indoor unit comprises at least one flute pipe, the flute pipe communicating with the outlet vent.

5. The indoor unit of claim 4, wherein at least a portion of the flute-shaped tubes are located within the heat exchange duct.

6. The indoor unit according to claim 1, wherein the return air inlet is provided with a damper for opening and closing the return air inlet.

7. The indoor unit of claim 1, wherein a ratio of heat exchange areas of the first heat exchanger and the second heat exchanger is a, and a ratio of air blowing amounts of the first fan and the second fan is B, wherein a and B satisfy: A/B is more than or equal to 0.8 and less than or equal to 1.2.

8. The indoor unit of claim 1, wherein the first fan and the first heat exchanger are sequentially disposed in the fresh air duct along a fresh air flow direction; and/or

The second fan and the second heat exchanger are sequentially arranged in the heat exchange air duct along the heat exchange flow direction.

9. The indoor unit of claim 1, wherein a humidification module is further disposed in the fresh air duct.

10. An air conditioner comprising an outdoor unit and the indoor unit as claimed in any one of claims 1 to 9, the outdoor unit being in communication with the indoor unit.

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