CN218763688U - Indoor heat exchange structure and air conditioning system - Google Patents

Abstract

The present disclosure relates to an indoor heat exchange structure and an air conditioning system. An indoor heat exchange structure for an air conditioning system includes: the air duct assembly is provided with an air duct and an air outlet communicated with the air duct; the fan is arranged in the air duct; the indoor heat exchanger group is arranged in the air duct, is positioned between the air exhaust end and the air outlet of the fan and is configured to exchange heat with air flow flowing through the indoor heat exchanger group; the indoor heat exchanger group comprises a first indoor heat exchanger, a second indoor heat exchanger and a first water pan, the first indoor heat exchanger is located on the upper side of the second indoor heat exchanger, the first indoor heat exchanger is configured to cool and dehumidify airflow discharged from an air exhaust end of the fan in a dehumidification mode of the air conditioning system, the second indoor heat exchanger is configured to heat airflow discharged from an air exhaust end of the fan in the dehumidification mode of the air conditioning system, and the first water pan is located between the first indoor heat exchanger and the second indoor heat exchanger and configured to receive condensed water of the first indoor heat exchanger.

Description

Indoor heat exchange structure and air conditioning system

Technical Field

The utility model relates to an air conditioner technical field especially relates to an indoor heat transfer structure and air conditioning system.

Background

With the improvement of living standard, people have various comfort requirements such as temperature control and dehumidification, heating without dryness and the like instead of simple refrigeration and heating. For the requirement of temperature control and dehumidification, in some related technologies, a structural form of up-and-down arrangement is adopted for the regenerative heat exchanger and the dehumidification heat exchanger, so that indoor return air is converged to be exhausted after passing through the regenerative heat exchanger and the dehumidification heat exchanger respectively.

SUMMERY OF THE UTILITY MODEL

The inventor finds through research that the structural style of arranging from top to bottom of backheating heat exchanger and dehumidification heat exchanger in the correlation technique is when the fan blows indoor return air to backheating heat exchanger and dehumidification heat exchanger, the hotter air current that flows through backheating heat exchanger flows upwards, the colder air current that flows through dehumidification heat exchanger flows downwards to lead to the natural separation of cold and hot air current, need just can realize the air current air-out with the help of wind-guiding structure and mix this moment, otherwise cause the air-out of upper heat cold down, make the user feel the temperature when using accuse temperature dehumidification mode low, it is uncomfortable.

In view of this, the embodiment of the present disclosure provides an indoor heat exchange structure and an air conditioning system, which can improve the comfort level in the dehumidification mode.

In one aspect of the present disclosure, there is provided an indoor heat exchange structure for an air conditioning system, including:

the air duct assembly is provided with an air duct and an air outlet communicated with the air duct;

the fan is arranged in the air duct; and

the indoor heat exchanger group is arranged in the air duct, is positioned between the air exhaust end of the fan and the air outlet and is configured to exchange heat with air flow flowing through the indoor heat exchanger group;

the indoor heat exchanger group comprises a first indoor heat exchanger, a second indoor heat exchanger and a first water pan, the first indoor heat exchanger is located on the upper side of the second indoor heat exchanger, the first indoor heat exchanger is configured to cool and dehumidify airflow discharged from an air exhaust end of the fan in a dehumidification mode of the air conditioning system, the second indoor heat exchanger is configured to heat airflow discharged from an air exhaust end of the fan in the dehumidification mode of the air conditioning system, and the first water pan is located between the first indoor heat exchanger and the second indoor heat exchanger and configured to receive condensed water of the first indoor heat exchanger.

In some embodiments, the maximum length of the first water collector is greater than the maximum length of the first indoor heat exchanger and the maximum length of the second indoor heat exchanger respectively in a first direction, wherein the first direction is parallel to an intersection line of an extension plane of a windward side of the first indoor heat exchanger and an extension plane of a windward side of the second indoor heat exchanger.

In some embodiments, at least one of the two ends of the first water tray projects relative to the first and second indoor heat exchangers in the first direction.

In some embodiments, in the first direction, a length n1 by which the first end of the first water tray protrudes relative to the first and second indoor heat exchangers satisfies: 1mm and n1 are constructed and 30mm, the second end of first water collector for first indoor heat exchanger with the outstanding length n2 of second indoor heat exchanger satisfies: 1mm and n2 and 30mm.

In some embodiments, in the vertical direction, the minimum distance h between the second indoor heat exchanger and the first water-receiving tray satisfies: are made of 0mm and then h are made of 30mm.

In some embodiments, the cross-section of the first water pan in a first direction has a V-shape or an inverted trapezoid shape with an open top, the first water pan comprises a first side wall adjacent to the fan and a second side wall on a side of the first side wall away from the fan, wherein the first direction is parallel to an intersection of an extension plane of a windward side of the first indoor heat exchanger and an extension plane of a windward side of the second indoor heat exchanger.

In some embodiments, the height n3 of the first sidewall satisfies: 10mm n3 are less than 30mm, and height n4 of second lateral wall satisfies: 10mm but not 4 (30mm) were constructed.

In some embodiments, the included angle n5 between the first side wall and the second side wall satisfies: 60 ° < n5<150 °.

In some embodiments, a bottom end of the first indoor heat exchanger is located between the first side wall and the second side wall.

In some embodiments, in the vertical direction, the distance L between the bottom of the first water collector and the first indoor heat exchanger satisfies: l < n3; and/or L < n4.

In some embodiments, the first drip tray has a cross-section in the shape of an inverted open-topped trapezoid, and further comprises a floor connected to both the first side wall and the second side wall, the floor having a maximum dimension n6 in a direction perpendicular to the first direction which satisfies: 0 mm-n6-woven cloth layer is 30mm.

In some embodiments, the bottom end of the first indoor heat exchanger is vertically opposite to the top end of the second indoor heat exchanger, and the windward side of the first indoor heat exchanger and the windward side of the second indoor heat exchanger form an included angle of less than 180 °.

In some embodiments, the indoor heat exchanger group further includes:

the second water pan is positioned at the lower side of the second indoor heat exchanger and is configured to receive the condensed water flowing out of the first water pan.

In some embodiments, the second water tray has a sloping side wall adjacent the air outlet for directing airflow through the second indoor heat exchanger towards the air outlet.

In some embodiments, a ratio P1 of an in-tube heat exchange area of the heat exchange tube in the first indoor heat exchanger to an in-tube heat exchange area of the heat exchange tube in the second indoor heat exchanger satisfies: p1 is more than or equal to 0.3 and less than or equal to 0.8; the ratio P2 of the external heat exchange area of the heat exchange tube in the first indoor heat exchanger to the external heat exchange area of the heat exchange tube in the second indoor heat exchanger satisfies the following conditions: p2 is more than or equal to 0.3 and less than or equal to 0.8.

In one aspect of the present disclosure, there is provided an air conditioning system including: the indoor heat exchange structure is provided.

In some embodiments, the air conditioning system is a ducted air conditioning system.

Therefore, according to the embodiment of the present disclosure, by positioning the first indoor heat exchanger for cooling and dehumidifying the airflow discharged from the fan in the dehumidification mode of the air conditioning system at the upper side of the second indoor heat exchanger for heating the airflow discharged from the fan in the dehumidification mode of the air conditioning system, the cooled and dehumidified airflow is positioned above the heated airflow and is directly contacted with the lighter and floating heated airflow to exchange heat downwards under the action of gravity, so that the cold and hot airflows are converged in the height direction, and the temperature and the humidity are more moderate; and a first water pan is arranged between the first indoor heat exchanger and the second indoor heat exchanger to receive the condensed water of the indoor heat exchanger, so that the effect that the condensed water generated in the dehumidification process falls on the second indoor heat exchanger to influence the heated air flow of the second indoor heat exchanger can be reduced or avoided, and the air conditioning system is more comfortable for users in the dehumidification mode.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the disclosure and together with the description, serve to explain the principles of the disclosure.

The present disclosure may be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic structural view of some embodiments of an indoor heat exchange structure according to the present disclosure;

FIG. 2 is a technical schematic of the embodiment of FIG. 1;

fig. 3-5 are dimensional schematic diagrams of some embodiments of indoor heat exchange structures according to the present disclosure, respectively.

It should be understood that the dimensions of the various parts shown in the figures are not drawn to scale. Further, the same or similar reference numerals denote the same or similar components.

Detailed Description

Various exemplary embodiments of the present disclosure will now be described in detail with reference to the accompanying drawings. The description of the exemplary embodiments is merely illustrative and is in no way intended to limit the disclosure, its application, or uses. The present disclosure may be embodied in many different forms and is not limited to the embodiments described herein. These embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that: the relative arrangement of parts and steps, the composition of materials, numerical expressions and numerical values set forth in these embodiments are to be construed as merely illustrative, and not restrictive, unless specifically stated otherwise.

The use of "first," "second," and similar words in this disclosure is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element preceding the word covers the element listed after the word, and does not exclude the possibility that other elements are also covered. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.

In the present disclosure, when a particular device is described as being located between a first device and a second device, intervening devices may or may not be present between the particular device and the first device or the second device. When a particular device is described as being coupled to another device, it can be directly coupled to the other device without intervening devices or can be directly coupled to the other device with intervening devices.

All terms (including technical or scientific terms) used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs unless specifically defined otherwise. It will be further understood that terms, such as those defined in commonly used dictionaries, should be interpreted as having a meaning that is consistent with their meaning in the context of the relevant art and will not be interpreted in an idealized or overly formal sense unless expressly so defined herein.

Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.

Fig. 1 is a schematic view of some embodiments of an indoor heat exchange structure according to the present disclosure. Fig. 2 is a technical principle schematic diagram of the embodiment of fig. 1. Referring to fig. 1 and 2, an embodiment of the present disclosure provides an indoor heat exchange structure for an air conditioning system. The indoor heat exchange structure comprises an air duct assembly 1, a fan 2 and an indoor heat exchanger group 3. The air duct assembly 1 has an air duct 11 and an air outlet 12 communicating with the air duct 11. The fan 2 is disposed in the air duct 11. The air duct 11 may further include an air return opening, and the air suction opening of the fan 2 may be communicated with the air return opening of the air duct 11. The fan 2 can adopt a cross-flow fan and can also adopt other fans.

The indoor heat exchanger group 3 is disposed in the air duct 11, is located between the air discharge end 21 of the fan 2 and the air outlet 12, and is configured to exchange heat with the air flowing through the indoor heat exchanger group 3.

The indoor heat exchanger group 3 includes a first indoor heat exchanger 31, a second indoor heat exchanger 32, and a first water pan 33. In some embodiments, the first indoor heat exchanger 31 and the second indoor heat exchanger 32 may include, but are not limited to, a tube and fin heat exchanger.

The first indoor heat exchanger 31 is located at an upper side of the second indoor heat exchanger 32, and the first indoor heat exchanger 31 is configured to cool and dehumidify an air flow discharged from the discharge end 21 of the fan 2 in a dehumidification mode of the air conditioning system. The second indoor heat exchanger 32 is configured to heat the air flow discharged from the discharge end 21 of the fan 2 in a dehumidification mode of the air conditioning system.

In a dehumidification mode of the air conditioning system, the first indoor heat exchanger 31 can be used as a dehumidification heat exchanger to exchange heat with the airflow discharged from the fan 2, so that the airflow is cooled to relatively dry cold air, and the second indoor heat exchanger 32 can be used as a regenerative heat exchanger to exchange heat with the airflow discharged from the fan 2, so that the airflow is heated to relatively high-temperature airflow.

For example, in some embodiments, the first indoor heat exchanger 31 and the second indoor heat exchanger 32 are in series in a refrigerant loop formed by the air conditioning system, the second indoor heat exchanger 32 releases heat as a condenser, and the first indoor heat exchanger 31 absorbs heat as an evaporator, so as to achieve the temperature control and dehumidification functions of the air conditioning system.

Referring to the technical principle shown in fig. 2, when the air conditioning system adopts the dehumidification mode, a part of the air flow f1 (solid line segment with large arrow) discharged from the discharge end 21 of the fan 2 flows through the first indoor heat exchanger 31 and exchanges heat with the first indoor heat exchanger 31. A lower portion of the airflow f1 flows through the second indoor heat exchanger 32 and exchanges heat with the second indoor heat exchanger 32. When the airflow f2 (solid line segment with small arrow) flowing through the first indoor heat exchanger 31 and cooled and dehumidified is discharged from the air outlet 12, the airflow f2 moves downward due to the guiding effect of the air duct and the effect of gravity, and when the airflow f3 (dotted line segment with small arrow) flowing through the second indoor heat exchanger 32 and heated is discharged from the air outlet 12, the airflow f3 floats upwards due to the fact that the density of the hotter airflow is smaller, so that the airflow f2 is mixed with the cooler airflow f2, cold and hot air and dry and wet air mixing are achieved, the discharged airflow with more balanced temperature and humidity is obtained, and the air outlet comfort degree is effectively improved.

In fig. 1, a first water pan 33 is located between the first indoor heat exchanger 31 and the second indoor heat exchanger 32, and is configured to receive condensed water of the first indoor heat exchanger 31. Because first indoor heat exchanger 31 can produce the comdenstion water when cooling the dehumidification to the air current, the comdenstion water flows and will influence the heating effect of second indoor heat exchanger 32 to the air current on second indoor heat exchanger 32 under the effect of gravity, consequently, receive the comdenstion water of first indoor heat exchanger 31 through the first water collector 33 that is located second indoor heat exchanger 32 upside, can reduce or avoid the comdenstion water that the dehumidification in-process produced to fall on the second indoor heat exchanger and influence its effect of heating the air current, thereby make air conditioning system make the user more comfortable under the dehumidification mode.

Referring to fig. 1 and 2, in some embodiments, the indoor heat exchanger group 3 further comprises a second water pan 34. A second water pan 34 is located on the underside of the second indoor heat exchanger 32 and is configured to receive condensate water flowing from the first water pan 33. The second water pan 34 may receive the condensed water flowing out and falling from at least one end of the first water pan 33 in the length direction, or receive the condensed water passing through a flow passage provided between the first water pan 33 and the second water pan 34, so as to prevent the second indoor heat exchanger 32 from being affected by the excessive overflow of the condensed water from the first water pan 33.

To assist the flow of the airflow f3 through the second indoor heat exchanger 32, referring to fig. 1, in some embodiments the second water tray 34 has a sloping side wall 341 adjacent the air outlet 12. The inclined side wall 341 may be used to direct the airflow passing through the second indoor heat exchanger 32 towards the air outlet 12.

Referring to fig. 1, in some embodiments, the bottom end of the first indoor heat exchanger 31 is opposite to the top end of the second indoor heat exchanger 32 in the vertical direction, and the windward side of the first indoor heat exchanger 31 is at an angle of less than 180 ° to the windward side of the second indoor heat exchanger 32, in fig. 1, the first indoor heat exchanger 31 and the second indoor heat exchanger 32 may be substantially ">" shaped to better conform to the wind field of the airflow discharged from the air discharge end 21 of the fan 2. Therefore, the uniformity of the air flow in the height direction is better, and the heat exchange difference of the U-shaped heat exchange tubes with different heights in the heat exchanger is reduced.

Fig. 3-5 are dimensional schematic diagrams of some embodiments of indoor heat exchange structures according to the present disclosure, respectively. Fig. 3 shows, by way of a diagram, a relative positional relationship between the first water tray 33 having a V-shaped cross section in the first direction a and the first indoor heat exchanger 31. The first direction a is parallel to an intersection line of an extension plane of the windward side of the first indoor heat exchanger 31 and an extension plane of the windward side of the second indoor heat exchanger 32. The windward side here refers to the surface adjacent to the discharge end 21 of the fan 2.

In order to structurally prevent the effect of the condensed water on the second indoor heat exchanger, therefore, with reference to fig. 3, in some embodiments, in the first direction a, the maximum length of the first water tray 33 is greater than the maximum length of the first indoor heat exchanger 31 and the maximum length of the second indoor heat exchanger 32, respectively. Thus, when the first indoor heat exchanger 31 is cooling the air flow and generating condensed water, the condensed water within the length of the first indoor heat exchanger 31 can more completely flow into the first drip tray 33 without falling out of the first drip tray 33. The longer first water-receiving tray 33 can be further discharged to the second water-receiving tray 34 through two ends downwards without falling to the shorter second indoor heat exchanger 32, so that the influence of the condensed water on the second indoor heat exchanger 32 is reduced or avoided.

Referring to fig. 3, in the first direction a, at least one of both ends of the first water tray 33 protrudes with respect to the first and second indoor heat exchangers 31 and 32. For example, in the first direction a, the first end 331 of the first water tray 33 protrudes by a length n1 with respect to the first and second indoor heat exchangers 31 and 32, and the second end 332 of the first water tray 33 protrudes by a length n2 with respect to the first and second indoor heat exchangers 31 and 32.

If n1 and n2 are too large, assembly difficulty is caused, and insufficient space is caused, so that the unit size is increased; on the other hand, if n1 and n2 are too small, the condensed water is likely to flow to the second indoor heat exchanger due to assembly variation. Thus, in some embodiments, the length n1 is made to satisfy: 1mm and n1 are woven together and 30mm, for example, n1 takes the values of 3mm, 12mm, 18mm, 22mm, 26mm and the like; and the length n2 satisfies: 1mm and n2 are woven into 30mm, for example n2 takes the value of 3mm, 12mm, 18mm, 22mm, 26mm etc. can simplify the assembly, reduce the space and occupy when reducing or avoiding the influence of comdenstion water to second indoor heat exchanger 32.

Referring to fig. 4 and 5, in the vertical direction, the minimum distance between the second indoor heat exchanger 32 and the first water pan 33 is h. If h is too large, a larger height space is occupied, and the size of the unit is increased; and if h is too small, the first water pan is too close to the two indoor heat exchangers, so that the installation is difficult. Thus, in some embodiments, the minimum distance h is made to satisfy: 0mm < equal h <30mm, for example, h is 5mm, 12mm, 16mm, 21mm, 27mm, which can simplify assembly and reduce space occupation.

The cross section of the first water receiving tray 33 can be set into different shapes according to requirements. For example, in fig. 4, the first water-tray 33 has a V-shaped cross-section in the first direction a. For example, in fig. 5, the first drip tray 33 has an inverted trapezoidal shape with an open top in the cross section in the first direction a. For the embodiment shown in fig. 4 and 5, the first drip tray 33 includes a first side wall 333 adjacent to the blower 2 and a second side wall 334 on a side of the first side wall 333 remote from the blower 2.

Referring to fig. 4 and 5, the height of the first sidewall 333 and the height of the second sidewall 334 are n3 and n4, respectively. If the heights n3 and n4 are too large, the first water pan 33 is too high to block a part of the heat exchange area of the first indoor heat exchanger 31, so that the dehumidification and heat exchange effects are affected; if the heights n3 and n4 are too small, the volume of the first water receiving tray 33 is made smaller, and the water is more easily overflowed or even blown. Thus, in some embodiments, the height n3 is such that: 10 mm-n 3-n 30mm, for example, n3 takes the values of 15mm, 20mm, 25mm, etc., and the height n4 is made to satisfy: 10mm and n4 are woven into 30mm, for example n4 takes the value 15mm, 20mm, 25mm etc. can reduce the risk that first water collector 33 spills over even blows water when guaranteeing first indoor heat exchanger 31's dehumidification heat transfer effect.

Referring to fig. 4, the included angle between the first sidewall 333 and the second sidewall 334 is n5. The angle between the first sidewall 333 and the second sidewall 334 in fig. 5 is also n5. If the included angle n5 is too large, the first water receiving tray 33 is too shallow, and is easy to overflow and even cause water blowing; if the included angle n5 is too small, the heat exchange area of a part of the first indoor heat exchanger 31 is easily blocked, so that the dehumidification heat exchange effect is influenced. Thus, in some embodiments, the included angle n5 satisfies: 60 degrees < n5<150 degrees, for example, n5 is 75 degrees, 90 degrees, 120 degrees, and the like, so that the risk of the first water pan 33 overflowing and even blowing water can be reduced while the dehumidification and heat exchange effect of the first indoor heat exchanger 31 is ensured.

Referring to fig. 5, the cross section of the first water receiving tray 33 is in the shape of an inverted trapezoid with an open top, and the first water receiving tray 33 further includes a bottom plate 335 connected to both the first side wall 333 and the second side wall 334. The maximum dimension of the bottom plate 335 in a direction perpendicular to the first direction a is n6. The surface of the bottom plate 335 may be flat or curved. If n6 is too large, it is easy to block a part of the heat exchange area of the first indoor heat exchanger 31, thereby affecting the dehumidification heat exchange effect. Thus, in some embodiments, the maximum dimension n6 satisfies: 0mm and n6 are constructed so as to cover 30mm to ensure the dehumidification and heat exchange effects of the first indoor heat exchanger 31.

Referring to fig. 1 and 3-5, in some embodiments, the bottom end of the first indoor heat exchanger 31 is located between the first side wall 333 and the second side wall 334. Therefore, the condensed water flowing out of the bottom end of the first indoor heat exchanger 31 can flow into the space between the first side wall 333 and the second side wall 334, and the condensed water is prevented from flowing out of the first water receiving tray 33 to affect the operation of the second indoor heat exchanger 32 on the lower side.

Referring to fig. 4 and 5, a distance between the bottom of the first water collector 33 and the first indoor heat exchanger 31 in a vertical direction is L. In some embodiments, the distance L satisfies: l < n3; and/or L < n4. In this way, the first indoor heat exchanger 31 is partially overlapped with the first water receiving tray 33 in height, so that the occupation of the indoor heat exchange structure in height space is reduced.

In some embodiments, a ratio of an inside heat exchange area of the heat exchange tube in the first indoor heat exchanger 31 to an inside heat exchange area of the heat exchange tube in the second indoor heat exchanger 32 is P1, and a ratio of an outside heat exchange area of the heat exchange tube in the first indoor heat exchanger 31 to an outside heat exchange area of the heat exchange tube in the second indoor heat exchanger 31 is P2. If the ratio P1 to P2 is too small, the heat exchange area of the first indoor heat exchanger 31 is small, so that incomplete evaporation is caused, the low pressure of the system is reduced, the first indoor heat exchanger is easy to freeze, the liquid return of the system is caused, and the reliability is reduced; when the ratio P1 to P2 is too large, the heat exchange area of the second indoor heat exchanger 32 is small, which results in insufficient heat recovery of the system and difficulty in temperature control. Therefore, in some embodiments, the ratios P1 and P2 can satisfy 0.3 ≦ P1 ≦ 0.8 and 0.3 ≦ P2 ≦ 0.8, so that the heat exchange areas of the first indoor heat exchanger 31 and the second indoor heat exchanger 32 are matched, complete evaporation is ensured, icing is not easily caused, and sufficient amount of heat return is ensured, thereby controlling the temperature more accurately.

The embodiment of the indoor heat exchange structure disclosed by the disclosure is applicable to an air conditioning system. Therefore, an embodiment of the present disclosure provides an air conditioning system, including the indoor heat exchange structure of any one of the foregoing embodiments. The air conditioning system is a ducted air conditioning system.

For the air conditioning system including the indoor heat exchange structure of the embodiment of the present disclosure, the air conditioning system may further include an indoor throttle valve, an indoor opening and closing valve, and the like. Accordingly, the first indoor heat exchanger 31 and the second indoor heat exchanger 32 may be connected in series with the corresponding indoor switching valves and then connected in parallel, a bypass may be provided between the refrigerant flow paths where the first indoor heat exchanger 31 and the second indoor heat exchanger 32 are located, and an indoor throttle may be provided in the bypass.

When the air conditioning system is in the dehumidification mode, the indoor on-off valves in the refrigerant flow paths of the first indoor heat exchanger 31 and the second indoor heat exchanger 32 may be closed, and the throttle valves on the bypasses may be opened to start the throttling function. Thus, the refrigerant first passes through the second indoor heat exchanger 32 to heat the passing air, passes through the indoor throttle valve after heat exchange, is throttled and depressurized into a low-temperature refrigerant, and then flows into the first indoor heat exchanger 31 to be cooled and dehumidified. After the air flowing through the first indoor heat exchanger 31 is cooled and dehumidified, the air can directly contact with the floating hot air flowing through the second indoor heat exchanger 32 for heat exchange, and the humidity of the cold and hot air tends to be balanced during heat exchange.

Thus, various embodiments of the present disclosure have been described in detail. Some details that are well known in the art have not been described in order to avoid obscuring the concepts of the present disclosure. It will be fully apparent to those skilled in the art from the foregoing description how to practice the presently disclosed embodiments.

Although some specific embodiments of the present disclosure have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are for illustration only and are not intended to limit the scope of the present disclosure. It will be understood by those skilled in the art that various changes may be made and equivalents may be substituted for elements thereof without departing from the scope and spirit of the present disclosure. The scope of the present disclosure is defined by the appended claims.

Claims (17)

1. An indoor heat exchange structure for an air conditioning system, comprising:

the air duct assembly (1) is provided with an air duct (11) and an air outlet (12) communicated with the air duct (11);

the fan (2) is arranged in the air duct (11); and

the indoor heat exchanger group (3) is arranged in the air duct (11), is positioned between the air exhaust end (21) of the fan (2) and the air outlet (12), and is configured to exchange heat with air flowing through the indoor heat exchanger group (3);

wherein the indoor heat exchanger group (3) comprises a first indoor heat exchanger (31), a second indoor heat exchanger (32) and a first water pan (33), the first indoor heat exchanger (31) is positioned at the upper side of the second indoor heat exchanger (32), the first indoor heat exchanger (31) is configured to cool and dehumidify the airflow discharged from the air discharge end (21) of the fan (2) in the dehumidification mode of the air conditioning system, the second indoor heat exchanger (32) is configured to heat the airflow discharged from the air discharge end (21) of the fan (2) in the dehumidification mode of the air conditioning system, and the first water pan (33) is positioned between the first indoor heat exchanger (31) and the second indoor heat exchanger (32) and is configured to receive the condensed water of the first indoor heat exchanger (31).

2. Indoor heat exchange structure according to claim 1, characterised in that the maximum length of the first water tray (33) is greater than the maximum length of the first indoor heat exchanger (31) and the maximum length of the second indoor heat exchanger (32), respectively, in a first direction (a), wherein the first direction (a) is parallel to the intersection of the plane of extension of the windward side of the first indoor heat exchanger (31) and the plane of extension of the windward side of the second indoor heat exchanger (32).

3. An indoor heat exchange structure according to claim 2, wherein at least one of both ends of the first water tray (33) protrudes with respect to the first and second indoor heat exchangers (31, 32) in the first direction (a).

4. An indoor heat exchange structure according to claim 3, wherein in the first direction (A), a length n1 by which the first end (331) of the first water tray (33) protrudes with respect to the first indoor heat exchanger (31) and the second indoor heat exchanger (32) satisfies: -1mm-n 1-30mm, the length n2 of the second end (332) of the first water tray (33) protruding with respect to the first indoor heat exchanger (31) and the second indoor heat exchanger (32) satisfying: 1mm and n2 and 30mm.

5. An indoor heat exchange structure according to claim 1, wherein the minimum distance h between the second indoor heat exchanger (32) and the first water pan (33) in the vertical direction satisfies: are made of 0mm and then h are made of 30mm.

6. Indoor heat exchange structure according to claim 1, characterized in that the first water tray (33) has a cross-section in the shape of a V or an inverted trapezoid with an open top in a first direction (a), the first water tray (33) comprising a first side wall (333) adjacent to the fan (2) and a second side wall (334) on the side of the first side wall (333) remote from the fan (2), wherein the first direction (a) is parallel to the intersection of the plane of extension of the windward side of the first indoor heat exchanger (31) and the plane of extension of the windward side of the second indoor heat exchanger (32).

7. An indoor heat exchange structure according to claim 6, wherein the height n3 of the first side wall (333) satisfies: 10 mm-n 3-n 30mm, and the height n4 of the second side wall (334) satisfies: 10mm but not 4 (30mm) were constructed.

8. An indoor heat exchange structure according to claim 6, wherein the included angle n5 between the first side wall (333) and the second side wall (334) satisfies the following condition: 60 ° < n5<150 °.

9. Indoor heat exchange structure according to claim 6, characterized in that the bottom end of the first indoor heat exchanger (31) is located between the first side wall (333) and the second side wall (334).

10. An indoor heat exchange structure according to claim 7, wherein the distance L between the bottom of the first water pan (33) and the first indoor heat exchanger (31) in the vertical direction satisfies: l < n3; and/or L < n4.

11. An indoor heat exchange structure according to claim 6, wherein the first water pan (33) has a cross section in the shape of an inverted trapezoid with an open top, the first water pan (33) further comprises a bottom plate (335) connected to both the first side wall (333) and the second side wall (334), and a maximum dimension n6 of the bottom plate (335) in a direction perpendicular to the first direction (A) satisfies: 0 mm-n6-woven cloth layer is 30mm.

12. Indoor heat exchange structure according to claim 1, characterized in that the bottom end of the first indoor heat exchanger (31) is vertically opposite to the top end of the second indoor heat exchanger (32), and the windward side of the first indoor heat exchanger (31) is at an angle of less than 180 ° to the windward side of the second indoor heat exchanger (32).

13. Indoor heat exchange structure according to claim 1, characterized in that the indoor heat exchanger group (3) further comprises:

a second water-tray (34) located on the underside of the second indoor heat exchanger (32) and configured to receive condensate water flowing from the first water-tray (33).

14. An indoor heat exchange structure according to claim 13, wherein the second water tray (34) has a sloping side wall (341) adjacent the air outlet vent (12) for directing airflow through the second indoor heat exchanger (32) towards the air outlet vent (12).

15. The indoor heat exchange structure according to claim 1, wherein a ratio P1 of an in-tube heat exchange area of a heat exchange tube in the first indoor heat exchanger (31) to an in-tube heat exchange area of a heat exchange tube in the second indoor heat exchanger (32) satisfies: p1 is more than or equal to 0.3 and less than or equal to 0.8; the ratio P2 of the external heat exchange area of the heat exchange tube in the first indoor heat exchanger (31) to the external heat exchange area of the heat exchange tube in the second indoor heat exchanger (32) satisfies the following conditions: p2 is more than or equal to 0.3 and less than or equal to 0.8.

16. An air conditioning system, comprising:

the indoor heat exchange structure of any one of claims 1 to 15.

17. The air conditioning system of claim 16, wherein the air conditioning system is a ducted air conditioning system.

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