Condenser, heat pump system and clothes dryer

Abstract

The utility model relates to the technical field of heat exchangers, and discloses a condenser which comprises a heat exchange tube set. The multiple heat exchange tube sets are sequentially arranged in the flowing direction of heat exchange air flow, the multiple heat exchange tube sets are sequentially communicated to form a refrigerant flow path, and each heat exchange tube set comprises multiple heat exchange flat tubes. The multiple heat exchange flat pipes in each heat exchange pipe set are sequentially communicated in the arrangement direction. According to the condenser, the heat exchange area of the condenser can be increased, the circulation stroke of a refrigerant can be prolonged, the condensation effect of the refrigerant in the condenser can be improved, the heat exchange efficiency of the condenser can be improved, and the heat exchange amount can be increased. The utility model further discloses a heat pump system and a clothes dryer.

Description

Technical Field

[0001] The present application relates to the technical field of heat exchangers, and in particular to a condenser, a heat pump system and a clothes dryer. Background Art

[0002] The condenser is the most critical component in a heat pump system, and its performance directly impacts the overall performance of the heat pump system and the dryer. Currently, copper tube-and-fin condensers are predominantly used in heat pump systems. These condensers suffer from low heat transfer efficiency, which reduces the condenser's heat transfer performance and the overall energy efficiency of the heat pump system.

[0003] There is a microchannel condenser in the related art, which is characterized by including: a collecting pipe and a heat exchange flat tube; there are multiple heat exchange flat tubes and two collecting pipes, and each collecting pipe is provided with multiple slots, the two collecting pipes are arranged on both sides of the multiple heat exchange flat tubes, and the two ends of each heat exchange flat tube are respectively installed in the slots of the collecting pipes on both sides thereof; each heat exchange flat tube is provided with multiple parallel refrigerant microchannels.

[0004] During the implementation of the embodiments of the present disclosure, it was found that at least the following problems exist in the related art:

[0005] The heat exchange area of ​​the single-row heat exchange flat tubes is small, and the circulation path of the refrigerant is short, resulting in poor condensation effect of the refrigerant, reduced heat exchange efficiency of the condenser, and reduced heat exchange capacity.

[0006] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to ordinary technicians in this field. Utility Model Content

[0007] In order to provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not an extensive review, nor is it intended to identify key / critical elements or delineate the scope of protection of these embodiments, but rather serves as a prelude to the detailed description that follows.

[0008] The embodiments of the present disclosure provide a condenser, a heat pump system and a clothes dryer to increase the heat exchange area of ​​the condenser, extend the circulation distance of the refrigerant, improve the condensation effect of the refrigerant in the condenser, improve the heat exchange efficiency of the condenser, and increase the heat exchange amount.

[0009] In some embodiments, a condenser includes a heat exchange tube group. The heat exchange tube groups are provided in plurality and arranged sequentially along the flow direction of a heat exchange gas flow. The plurality of heat exchange tube groups are sequentially connected to form a refrigerant flow path. Each heat exchange tube group includes a plurality of flat heat exchange tubes. The plurality of flat heat exchange tubes in each heat exchange tube group are sequentially connected along the arrangement direction.

[0010] Optionally, the multiple heat exchange tube groups include a first heat exchange tube group, a second heat exchange tube group and a third heat exchange tube group. The first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group are arranged in sequence along the flow direction of the heat exchange air flow. The refrigerant flows along the first heat exchange tube group to the second heat exchange tube group, and then flows from the second heat exchange tube group to the third heat exchange tube group.

[0011] Optionally, the ratio of the flow areas among the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group is in the range of [1-4]:[1-3]:[1-2].

[0012] Optionally, the flow areas of the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group gradually decrease.

[0013] Optionally, the flow areas of the first heat exchange tube group, the second heat exchange tube group and the third heat exchange tube group are the same.

[0014] Optionally, the multiple heat exchange flat tubes in each heat exchange tube group are arranged in sequence along a flow direction perpendicular to the heat exchange airflow, and there is a flow gap between adjacent heat exchange flat tubes.

[0015] Optionally, both side walls of each heat exchange flat tube in each heat exchange tube group are provided with a plurality of heat exchange fins, and the heat exchange fins provided on opposite side walls of adjacent heat exchange flat tubes are located in the flow gap.

[0016] Optionally, a plurality of refrigerant flow channels are provided inside each heat exchange flat tube, and a plurality of heat exchange teeth are provided on the inner wall of each refrigerant flow channel.

[0017] In some embodiments, a heat pump system includes: a condenser according to any one of the above embodiments.

[0018] In some embodiments, a clothes dryer includes: the heat pump system of the above embodiment.

[0019] The condenser, heat pump system, and clothes dryer provided by the embodiments of the present disclosure can achieve the following technical effects:

[0020] By arranging multiple heat exchange tube groups along the flow direction of the heat exchange airflow, each heat exchange tube group contains multiple flat heat exchange tubes, each of which contacts the heat exchange airflow for heat exchange, thereby increasing the heat exchange area of ​​the condenser and improving the condenser's heat exchange efficiency. The multiple heat exchange tube groups are sequentially connected to form a refrigerant flow path. The refrigerant flows along the multiple heat exchange tube groups, extending the refrigerant's circulation distance, improving the refrigerant's condensation efficiency in the condenser, and increasing the heat exchange capacity.

[0021] The above general description and the following description are exemplary and explanatory only and are not intended to limit the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] One or more embodiments are exemplarily described by corresponding drawings. These exemplary descriptions and drawings do not limit the embodiments. Elements with the same reference numerals in the drawings are shown as similar elements. The drawings do not constitute a scale limitation. In addition,

[0023] Figure 1 is a structural schematic diagram of a condenser provided in an embodiment of the present disclosure;

[0024] Figure 2 Schematic diagram of the arrangement of adjacent heat exchange flat tubes provided in an embodiment of the present disclosure;

[0025] Figure 3 Schematic diagram of the connection of multiple flat heat exchange tubes in a heat exchange tube group provided by an embodiment of the present disclosure;

[0026] Figure 4 1 is a schematic structural diagram of a first heat exchange tube group, a second heat exchange tube group, and a third heat exchange tube group provided in an embodiment of the present disclosure;

[0027] Figure 5 Schematic diagram of the flow direction of the refrigerant in the first heat exchange tube group, the second heat exchange tube group, and the third heat exchange tube group provided by the embodiment of the present disclosure;

[0028] Figure 6 is a front view of a heat exchange tube group provided by an embodiment of the present disclosure;

[0029] Figure 7 is a structural schematic diagram of another first heat exchange tube group, a second heat exchange tube group, and a third heat exchange tube group provided in an embodiment of the present disclosure;

[0030] Figure 8 This is a schematic diagram of the internal structure of a heat exchange flat tube provided in an embodiment of the present disclosure.

[0031] Reference numerals:

[0032] 100, heat exchange tube group; 200, heat exchange flat tube; 210, flow gap; 220, heat exchange fin; 230, refrigerant flow channel; 231, heat exchange teeth; 300, first heat exchange tube group; 400, second heat exchange tube group; 500, third heat exchange tube group. DETAILED DESCRIPTION

[0033] In order to be able to understand the features and technical content of the embodiments of the present disclosure in more detail, the implementation of the embodiments of the present disclosure is described in detail below in conjunction with the accompanying drawings. The accompanying drawings are for reference only and are not used to limit the embodiments of the present disclosure. In the following technical description, for the sake of convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0034] In the description and claims of the embodiments of the present disclosure, as well as in the accompanying drawings, the terms "first," "second," and the like are used to distinguish similar items and are not necessarily used to describe a particular order or precedence. It should be understood that the terms used in this manner are interchangeable, where appropriate, to facilitate the description of the embodiments of the present disclosure. Furthermore, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0035] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back", etc. indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific direction, or to be constructed and operated in a specific direction. Moreover, in addition to being used to indicate directions or positional relationships, some of the above terms may also be used to indicate other meanings. For example, the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to specific circumstances.

[0036] Furthermore, the terms "disposed," "connected," and "fixed" should be interpreted broadly. For example, "connected" can mean a fixed connection, a removable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection, an indirect connection through an intermediary, or an internal connection between two devices, elements, or components. Those skilled in the art will understand the specific meanings of these terms in the embodiments of this disclosure based on the specific circumstances.

[0037] Unless otherwise stated, the term "plurality" means two or more.

[0038] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present disclosure can be combined with each other.

[0039] Combine Figure 1-8As shown, in some embodiments, the condenser includes a heat exchange tube group 100. A plurality of heat exchange tube groups 100 are provided, and the plurality of heat exchange tube groups 100 are sequentially arranged along the flow direction of the heat exchange gas flow. The plurality of heat exchange tube groups 100 are sequentially connected to form a refrigerant flow path. Each heat exchange tube group 100 includes a plurality of flat heat exchange tubes 200; wherein the plurality of flat heat exchange tubes 200 in each heat exchange tube group 100 are sequentially connected along the arrangement direction.

[0040] The condenser provided by the disclosed embodiments comprises multiple heat exchange tube groups 100 arranged along the flow direction of the heat exchange airflow. Since each heat exchange tube group 100 includes multiple flat heat exchange tubes 200, each flat heat exchange tube 200 is in contact with the heat exchange airflow for heat exchange, thereby increasing the heat exchange area of ​​the condenser and improving the heat exchange efficiency of the condenser. The multiple heat exchange tube groups 100 are sequentially connected to form a refrigerant flow path. The refrigerant flows along the multiple heat exchange tube groups 100, extending the refrigerant's circulation distance, improving the refrigerant's condensation efficiency in the condenser, and increasing the heat exchange capacity.

[0041] For example, taking the case where the heat exchange airflow flows in the horizontal direction, the plurality of heat exchange tube groups 100 are arranged in sequence in the horizontal direction.

[0042] Optionally, the plurality of heat exchange tube groups 100 are evenly arranged along the flow direction of the heat exchange airflow, thereby improving the heat exchange uniformity of the condenser and enhancing the heat exchange effect.

[0043] Optionally, along the flow direction of the heat exchange airflow, the spacing between adjacent heat exchange tube groups 100 is the same, so that the overall structure of the condenser is more compact.

[0044] Alternatively, as Figure 2 As shown, the multiple heat exchange flat tubes 200 in each heat exchange tube group 100 are arranged in sequence perpendicular to the flow direction of the heat exchange airflow, with flow gaps 210 between adjacent heat exchange flat tubes 200. This allows each heat exchange tube group 100 to be positioned perpendicular to the flow direction of the heat exchange airflow. Heat exchange airflow is blown perpendicularly toward the heat exchange tube group 100 and flows along the flow gaps 210 between adjacent heat exchange flat tubes 200, improving heat exchange efficiency. Furthermore, the placement of each heat exchange tube group 100 perpendicular to the flow direction of the heat exchange airflow reduces the space occupied by the multiple heat exchange tube groups 100 along the flow direction of the heat exchange airflow, making the overall structure of the condenser more compact and reducing the installation space occupied by the condenser.

[0045] For example, taking the case where the heat exchange airflow flows in the horizontal direction, the multiple heat exchange flat tubes 200 in each heat exchange tube group 100 are arranged in sequence in the vertical direction, and a flow gap 210 is defined between the upper and lower side walls of adjacent heat exchange flat tubes 200 .

[0046] Optionally, the multiple flat heat exchange tubes 200 in each heat exchange tube group 100 are evenly arranged in the vertical direction, and the width of the flow gaps 210 between adjacent flat heat exchange tubes 200 is the same. In this way, the heat exchange airflow is more evenly exchanged when flowing through each heat exchange tube group 100, and the heat exchange effect is better.

[0047] Optionally, the multiple heat exchange flat tubes 200 in each heat exchange tube group 100 are all located in the same vertical plane. In this way, the heat exchange tube group 100 occupies less space in the horizontal direction, making the condenser more compact in the horizontal direction and requiring less installation space.

[0048] Understandably, Figure 3 As shown, adjacent heat exchange flat tubes 200 in each heat exchange tube group 100 are connected through the heat exchange elbow, and adjacent heat exchange tube groups 100 in multiple heat exchange tube groups 100 are also connected through the heat exchange elbow. The refrigerant in the upstream heat exchange tube group 100 among adjacent heat exchange tube groups 100 flows into the downstream heat exchange tube group 100 through the heat exchange elbow, and the refrigerant in the upstream heat exchange flat tube 200 among adjacent heat exchange flat tubes 200 flows into the downstream heat exchange flat tube 200 through the heat exchange elbow. The heat exchange flat tubes 200 in the upstream heat exchange tube group 100 between adjacent heat exchange tube groups 100 are also connected with the heat exchange flat tubes 200 in the downstream heat exchange tube group 100 through the heat exchange elbow, which will not be described in detail here.

[0049] Combine Figure 4-Figure 7 As shown, in some embodiments, the plurality of heat exchange tube groups 100 include a first heat exchange tube group 300, a second heat exchange tube group 400, and a third heat exchange tube group 500. The first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500 are arranged sequentially along the flow direction of the heat exchange gas flow. The refrigerant flows along the first heat exchange tube group 300 to the second heat exchange tube group 400, and then from the second heat exchange tube group 400 to the third heat exchange tube group 500. Thus, the condenser is provided with three rows of tube groups, namely the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500, which can increase the contact heat exchange area between the condenser and the heat exchange gas flow. The refrigerant flows along the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500, extending the refrigerant circulation distance, improving the refrigerant condensation effect, and increasing the heat exchange capacity.

[0050] Specifically, the first heat exchange tube group 300, the second heat exchange tube group 400 and the third heat exchange tube group 500 are arranged in sequence in the horizontal direction, and the first heat exchange tube group 300 is located on the windward side of the second heat exchange tube group 400, and the second heat exchange tube group 400 is located on the windward side of the third heat exchange tube group 500.

[0051] Illustratively, the multiple heat exchange flat tubes 200 in the first heat exchange tube group 300 are located in the same vertical plane, the multiple heat exchange flat tubes 200 in the second heat exchange tube group 400 are located in the same vertical plane, and the multiple heat exchange flat tubes 200 in the third heat exchange tube group 500 are located in the same vertical plane.

[0052] Alternatively, as Figure 6 As shown, each heat exchange flat tube 200 in each heat exchange tube group 100 is provided with a plurality of heat exchange fins 220 on both sides. The heat exchange fins 220 provided on the opposing side walls of adjacent heat exchange flat tubes 200 are located within the flow gap 210. Thus, the heat exchange airflow flows through the flow gap 210 between adjacent heat exchange flat tubes 200 and exchanges heat with the heat exchange fins 220, increasing the heat exchange area between the heat exchange airflow and the condenser, further improving heat exchange efficiency and increasing the amount of heat exchanged.

[0053] For example, taking the case where a plurality of heat exchange flat tubes 200 are arranged in a vertical direction, a plurality of heat exchange fins 220 are provided on the upper and lower side walls of each heat exchange flat tube 200 .

[0054] Optionally, the multiple heat exchange fins 220 provided on the upper and lower sidewalls of each heat exchange flat tube 200 are evenly arranged in the horizontal direction. In this way, the multiple heat exchange fins 220 provided on the two sidewalls of each heat exchange flat tube 200 are evenly distributed, and the heat transfer between the heat exchange flat tube 200 and the heat exchange fins 220 is more uniform, further improving the heat exchange uniformity of the heat exchange airflow.

[0055] Optionally, the heat exchange fins 220 are of a shovel-fin structure. Thus, the heat exchange fins 220 of the shovel-fin structure increase the contact area with the heat exchange airflow while reducing the space occupied by the heat exchange fins 220, making the overall structure of the condenser more compact.

[0056] For example, taking a plurality of heat exchange flat tubes 200 arranged in the vertical direction and a plurality of heat exchange fins 220 provided on the upper and lower side walls of each heat exchange flat tube 200 as an example, the heat exchange fins 220 with a shovel-fin structure can increase the contact area between the heat exchange fins 220 and the heat exchange airflow while reducing the space occupied by the heat exchange fins 220 in the vertical direction, reducing the thickness of the condenser in the vertical direction, and reducing the space occupied by the condenser in the vertical direction.

[0057] Optionally, the ratio of the flow areas among the first heat exchange tube group 300 , the second heat exchange tube group 400 and the third heat exchange tube group 500 is in the range of [1-4]:[1-3]:[1-2].

[0058] Optionally, the ratio of the flow areas of the first heat exchange tube group 300 , the second heat exchange tube group 400 and the third heat exchange tube group 500 is 4:3:2.

[0059] Combine Figure 4 and Figure 5 As shown in FIG. 1 , in one embodiment, the flow areas of the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500 gradually decrease. Thus, as the refrigerant flows through the condenser, it sequentially experiences states of unidirectional flow, annular flow, block flow, bubbly flow, and unidirectional flow. The refrigerant is in a gaseous state in the initial unidirectional flow and in a liquid state in the final unidirectional flow. The heat transfer coefficient of the refrigerant is the highest when it is in the state of annular flow and block flow, the heat transfer coefficient is moderate when it is in the state of bubbling flow, and the heat transfer coefficient is the lowest in the final state of liquid unidirectional flow. The first heat exchange tube group 300, the second heat exchange tube group 400 and the third heat exchange tube group 500 are arranged in sequence along the flow direction of the refrigerant. Therefore, the flow areas of the first heat exchange tube group 300, the second heat exchange tube group 400 and the third heat exchange tube group 500 are set to gradually decrease, so that the heat transfer area of ​​the refrigerant is the largest when it is in the state of annular flow and block flow, the heat transfer area is moderate when it is in the state of bubbling flow, and the heat transfer area is the smallest when it is in the state of liquid unidirectional flow, so that the heat transfer coefficient of the refrigerant matches the heat transfer area, while increasing the heat exchange efficiency, reducing costs, and making the overall structure of the condenser more compact.

[0060] Optionally, the heat exchange flat tubes 200 in the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500 are all of the same length and have gradually decreasing widths. This makes the overall structure of the condenser more regular, improves heat exchange efficiency, and increases heat exchange capacity.

[0061] Specifically, the width of the heat exchange flat tubes 200 in the first heat exchange tube group 300 is greater than the width of the heat exchange flat tubes 200 in the second heat exchange tube group 400 , and the width of the heat exchange flat tubes 200 in the second heat exchange tube group 400 is greater than the width of the heat exchange flat tubes 200 in the third heat exchange tube group 500 .

[0062] It can be understood that the specifications of the multiple heat exchange flat tubes 200 in the first heat exchange tube group 300 are the same, the specifications of the multiple heat exchange flat tubes 200 in the second heat exchange tube group 400 are the same, and the specifications of the multiple heat exchange flat tubes 200 in the third heat exchange tube group 500 are the same.

[0063] It can be understood that, taking the horizontal arrangement of the heat exchange flat tube 200 as an example, the length of the heat exchange flat tube 200 refers to the length of the heat exchange flat tube 200 along the refrigerant flow direction, and the width of the heat exchange flat tube 200 refers to the horizontal width of the heat exchange flat tube 200 perpendicular to the refrigerant flow direction.

[0064] Optionally, the ratio of the widths of the heat exchange flat tubes 200 in the first heat exchange tube group 300 , the second heat exchange tube group 400 , and the third heat exchange tube group 500 is in the range of [1-4]:[1-3]:[1-2].

[0065] Specifically, the width of the flat heat exchange tubes 200 in the first heat exchange tube group 300 is 32 cm, the width of the flat heat exchange tubes 200 in the second heat exchange tube group 400 is 25.4 cm, and the width of the flat heat exchange tubes 200 in the third heat exchange tube group 500 is 18 cm. This allows the heat transfer coefficient of the refrigerant at each stage to be more accurately matched to the heat exchange area, improving heat exchange efficiency while reducing costs.

[0066] Combine Figure 7 As shown, in another embodiment, the flow areas of the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500 are the same. Thus, setting the flow areas of the flat heat exchange tubes 200 in the first heat exchange tube group 300, the second heat exchange tube group 400, and the third heat exchange tube group 500 to be the same can reduce mold costs and lower costs during the production of the condenser.

[0067] Optionally, the ratio of the flow areas of the flat heat exchange tubes 200 in the first heat exchange tube group 300 , the second heat exchange tube group 400 , and the third heat exchange tube group 500 is 1:1:1.

[0068] Optionally, the lengths and widths of the flat heat exchange tubes 200 in the first heat exchange tube group 300 , the second heat exchange tube group 400 , and the third heat exchange tube group 500 are all the same.

[0069] It can be understood that the specifications of the heat exchange flat tubes 200 in the first heat exchange tube group 300 , the second heat exchange tube group 400 and the third heat exchange tube group 500 are the same.

[0070] Combine Figure 8 As shown, in some embodiments, each heat exchange flat tube 200 is provided with multiple refrigerant flow channels 230, and the inner wall of each refrigerant flow channel 230 is provided with multiple heat exchange teeth 231. Thus, by providing multiple refrigerant flow channels 230 within the heat exchange flat tube 200 for refrigerant circulation, the heat exchange effect is improved. During refrigerant circulation, a liquid film easily forms on the upper and lower inner walls of the refrigerant flow channels 230, hindering heat exchange between the refrigerant and the inner wall of the refrigerant flow channel 230. Therefore, multiple heat exchange teeth 231 are provided on the inner wall of each refrigerant flow channel 230 to create turbulent flow for the refrigerant flowing near the inner wall of the refrigerant flow channel 230, thereby making the refrigerant more evenly distributed within the refrigerant flow channel 230, increasing the turbulence of the refrigerant on the inner wall of the refrigerant flow channel 230, and increasing the heat exchange coefficient between the refrigerant and the inner wall of the refrigerant flow channel 230, thereby improving heat exchange efficiency.

[0071] Optionally, a plurality of heat exchange teeth 231 are provided on the upper inner wall and the lower inner wall of each refrigerant flow channel 230 .

[0072] Optionally, the multiple heat exchange teeth 231 provided on the upper inner wall of each refrigerant flow channel 230 are evenly distributed perpendicular to the refrigerant flow direction, and the multiple heat exchange teeth 231 provided on the lower inner wall of each refrigerant flow channel 230 are also evenly distributed perpendicular to the refrigerant flow direction. In this way, the refrigerant flowing through the refrigerant flow channel 230 is more evenly circulated within the refrigerant flow channel 230 due to the disturbance of the heat exchange teeth 231, thereby improving heat exchange uniformity.

[0073] Optionally, the multiple heat exchange teeth 231 are symmetrically distributed on the upper inner wall and the lower inner wall of each refrigerant flow channel 230. In this way, multiple heat exchange teeth 231 are provided on the upper inner wall and the lower inner wall of each refrigerant flow channel 230, forming a turbulent flow for the refrigerant flowing in the refrigerant flow channel 230. The symmetrical distribution of the multiple heat exchange teeth 231 on the upper inner wall and the lower inner wall of each refrigerant flow channel 230 further enhances the turbulent flow effect on the refrigerant, so that the refrigerant flowing in the upper and lower regions of the entire cavity of the refrigerant flow channel 230 is disturbed, making it difficult for the refrigerant to form a liquid film on the inner wall of the refrigerant flow channel 230, reducing the heat transfer resistance between the refrigerant and the inner wall of the refrigerant flow channel 230, increasing the turbulence of the refrigerant on the inner wall of the refrigerant flow channel 230, and improving the heat exchange coefficient between the refrigerant and the inner wall of the refrigerant flow channel 230, thereby improving the heat exchange efficiency.

[0074] In some embodiments, a heat pump system includes: a condenser according to any one of the above embodiments.

[0075] The clothes dryer provided by the embodiment of the present disclosure can improve the heat exchange efficiency of the heat pump system, increase the heat exchange amount, and improve the energy efficiency level of the heat pump system by setting a condenser of any of the above embodiments.

[0076] In some embodiments, a clothes dryer includes: the heat pump system of the above embodiment.

[0077] The clothes dryer provided by the embodiment of the present disclosure can improve the heat exchange efficiency of the clothes dryer, increase the heat exchange amount, shorten the drying time, and improve the energy efficiency level of the clothes dryer by setting the heat pump system of the above embodiment.

[0078] The above description and the accompanying drawings sufficiently illustrate the embodiments of the present disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Unless expressly required, individual components and functions are optional, and the order of operations may vary. Portions and features of some embodiments may be included in or replace portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A condenser, characterized in that: include: A plurality of heat exchange tube groups (100) are provided, and the plurality of heat exchange tube groups (100) are arranged in sequence along the flow direction of the heat exchange airflow, and the plurality of heat exchange tube groups (100) are connected in sequence to form a refrigerant flow path, and each heat exchange tube group (100) includes a plurality of heat exchange flat tubes (200); The plurality of flat heat exchange tubes (200) in each heat exchange tube group (100) are sequentially connected along the arrangement direction; The plurality of heat exchange tube groups (100) include a first heat exchange tube group (300), a second heat exchange tube group (400) and a third heat exchange tube group (500). The first heat exchange tube group (300), the second heat exchange tube group (400) and the third heat exchange tube group (500) are arranged in sequence along the flow direction of the heat exchange air flow. The refrigerant flows along the first heat exchange tube group (300) to the second heat exchange tube group (400), and then flows from the second heat exchange tube group (400) to the third heat exchange tube group (500); the flow areas of the first heat exchange tube group (300), the second heat exchange tube group (400) and the third heat exchange tube group (500) gradually decrease; and the ratio of the flow areas of the first heat exchange tube group (300), the second heat exchange tube group (400) and the third heat exchange tube group (500) is 4:3:

2.

2. The condenser according to claim 1, characterized in that The plurality of heat exchange flat tubes (200) in each heat exchange tube group (100) are arranged in sequence along a flow direction perpendicular to the heat exchange airflow, and a flow gap (210) is provided between adjacent heat exchange flat tubes (200).

3. The condenser according to claim 2, characterized in that Both side walls of each heat exchange flat tube (200) in each heat exchange tube group (100) are provided with a plurality of heat exchange fins (220), and the heat exchange fins (220) provided on the opposite side walls of adjacent heat exchange flat tubes (200) are located in the flow gap (210).

4. The condenser according to any one of claims 1 to 3, characterized in that: A plurality of refrigerant flow channels (230) are provided inside each heat exchange flat tube (200), and a plurality of heat exchange teeth (231) are provided on the inner wall of each refrigerant flow channel (230).

5. A heat pump system, characterized in that: include: A condenser as claimed in any one of claims 1 to 4.

6. A clothes dryer, characterized in that: include: The heat pump system of claim 5.

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