Air conditioner heat exchanger and air conditioner system

Abstract

The utility model relates to the technical field of air conditioning equipment, and discloses an air conditioning heat exchanger and an air conditioning system.The air conditioning heat exchanger comprises a plurality of heat exchange pipe sets, the heat exchange pipe sets are sequentially stacked in the direction that air flows through the air conditioning heat exchanger, so that the air can sequentially flow through the heat exchange pipe sets, and each heat exchange pipe set comprises one or more heat exchange pipe sections; and the throttling device is arranged between the two adjacent heat exchange tube groups, and / or is arranged between the two adjacent heat exchange tube sections. According to the embodiment, under the condition that the air humidity is reduced, the air temperature can be increased, and the use experience is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air-conditioning equipment, for example, to an air-conditioning heat exchanger and an air-conditioning system. Background Art

[0002] Air conditioning systems typically have cooling and heating modes. By circulating the refrigerant through a loop formed by the compressor, outdoor heat exchanger, throttling component, indoor heat exchanger, and finally the compressor, they can improve indoor temperature and humidity, enhancing user comfort. The dehumidification function of air conditioners is typically based on the principle of water vapor condensation. When humid air passes through the low-temperature heat exchanger, the air temperature drops significantly, causing the air humidity to reach a supersaturated state. Excess water vapor condenses, thereby reducing the air humidity.

[0003] However, in everyday life, air conditioners operate in complex environments, such as low temperatures but high humidity. In these situations, air conditioner dehumidification requires passing moist air through a low-temperature evaporator, condensing the water vapor in the air. However, after passing the low-temperature evaporator, the air temperature becomes lower, giving the user a cooler sensation, affecting comfort and reducing the user experience.

[0004] 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

[0005] 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.

[0006] The embodiments of the present disclosure provide an air-conditioning heat exchanger, which can increase air temperature while reducing air humidity, thereby improving user experience.

[0007] According to the first embodiment provided in the present application, an air-conditioning heat exchanger is provided, which includes: multiple heat exchange tube groups, which are stacked in sequence along the direction of air flowing through the air-conditioning heat exchanger so that air can flow through the multiple heat exchange tube groups in sequence, and each heat exchange tube group includes one or more heat exchange tube segments; a throttling device, which is arranged between two adjacent heat exchange tube groups and / or between two adjacent heat exchange tube segments.

[0008] In some optional embodiments, the plurality of heat exchange tube groups include: a first heat exchange tube group, including a first heat exchange tube segment and a second heat exchange tube segment connected to each other, a first throttling device is provided between the first heat exchange tube segment and the second heat exchange tube segment, and the throttling device includes a first throttling device.

[0009] In some optional embodiments, the multiple heat exchange tube groups further include a second heat exchange tube group and a third heat exchange tube group, the first port of the second heat exchange tube group is used to communicate with the electronic expansion valve of the air-conditioning system, the second port of the second heat exchange tube group is communicated with the first port of the first heat exchange tube segment, the second port of the first heat exchange tube segment is communicated with the first port of the third heat exchange tube group, and the second port of the third heat exchange tube group is used to communicate with the four-way valve of the air-conditioning system; wherein, a second throttling device is provided between the first port of the second heat exchange tube segment and the first port of the third heat exchange tube group, and the throttling device includes a second throttling device; and / or, a third throttling device is provided between the first port of the second heat exchange tube group and the first port of the first heat exchange tube segment, and the throttling device includes a third throttling device.

[0010] In some optional embodiments, the second heat exchange tube group includes a plurality of third heat exchange tube segments, and the plurality of third heat exchange tube segments are arranged in parallel or in series. When the plurality of third heat exchange tube segments are arranged in series, a fourth throttling device is provided between two adjacent third heat exchange tube segments, and the throttling device includes a fourth throttling device; and / or,

[0011] The third heat exchange tube group includes multiple fourth heat exchange tube segments, which are arranged in parallel or in series. When the multiple fourth heat exchange tube segments are arranged in series, a fifth throttling device is provided between two adjacent fourth heat exchange tube segments, and the throttling device includes a fifth throttling device.

[0012] In some optional embodiments, the air conditioning heat exchanger further includes: a first one-way valve, the inlet end of which is connected to the second port of the second heat exchange pipe segment, and the inlet end is connected to the first port of the third heat exchange pipe group, and the outlet end is connected to the first port of the second heat exchange pipe group; a second one-way valve, the inlet end of which is connected to the second port of the third heat exchange pipe group, the outlet end is connected to the second port of the first heat exchange pipe segment, and the outlet end is connected to the first port of the second heat exchange pipe segment.

[0013] In some optional embodiments, a ratio of the sum of the heat exchange tube lengths of the second heat exchange tube group and the first heat exchange tube segment to the sum of the heat exchange tube lengths of the second heat exchange tube segment and the third heat exchange tube group is in a range of 0.8 to 1.2.

[0014] In some optional embodiments, the length of the heat exchange tubes of the second heat exchange tube segment is less than or equal to the length of the heat exchange tubes of the third heat exchange tube group.

[0015] In some optional embodiments, the air-conditioning heat exchanger further includes a heat exchange fan, and along the air outlet direction of the heat exchange fan, the third heat exchange tube group, the first heat exchange tube group and the second heat exchange tube group are stacked in sequence.

[0016] In some optional embodiments, along the direction of air flowing through the air-conditioning heat exchanger, the first heat exchange tube segment and the second heat exchange tube segment are stacked in sequence, or the first heat exchange tube segment and the second heat exchange tube segment are arranged in parallel.

[0017] According to a second embodiment provided by the present application, an air-conditioning system is provided, comprising the air-conditioning heat exchanger as described in any one of the above items.

[0018] The air conditioning heat exchanger and air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] In this optional embodiment, a throttling device is provided between two adjacent heat exchange tube groups, and / or between two adjacent heat exchange tube segments of a heat exchange tube group. This reduces the refrigerant pressure within the heat exchange tube group or heat exchange tube segment downstream of the throttling device when the throttling device is in operation, allowing the heat exchange tube group or heat exchange tube segment upstream of the throttling device to condense and release heat, while the heat exchange tube group or heat exchange tube segment downstream of the throttling device can evaporate and absorb heat. Furthermore, multiple heat exchange tube groups are stacked sequentially along the direction of air flow through the air conditioner heat exchanger. This allows air to flow through the heat exchange tube group or heat exchange tube segment downstream of the throttling device first, thereby cooling and dehumidifying the air, and then through the heat exchange tube group or heat exchange tube segment upstream of the throttling device, thereby heating the air. Therefore, this air conditioner heat exchanger not only cools and dehumidifies the air, but also increases the air temperature, reducing the overall amount of cooling applied to the room by the heat exchanger during the dehumidification process, thereby improving user comfort and enhancing the user experience.

[0020] 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

[0021] 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 considered similar elements. The drawings do not constitute a scale limitation. In addition,

[0022] Figure 1 is a structural schematic diagram of an air-conditioning heat exchanger provided by an embodiment of the present disclosure;

[0023] Figure 2 is a structural schematic diagram of another air-conditioning heat exchanger provided by an embodiment of the present disclosure;

[0024] Figure 3 is a structural schematic diagram of another air-conditioning heat exchanger provided by an embodiment of the present disclosure;

[0025] Figure 4 It is a structural schematic diagram of another air-conditioning heat exchanger provided in an embodiment of the present disclosure.

[0026] Reference numerals:

[0027] 100, heat exchange tube group; 110, first heat exchange tube group; 111, first heat exchange tube section; 112, second heat exchange tube section; 120, second heat exchange tube group; 121, third heat exchange tube section; 130, third heat exchange tube group; 131, fourth heat exchange tube section;

[0028] 200, throttling device; 210, first throttling device; 220, second throttling device; 230, third throttling device;

[0029] 310, first one-way valve; 320, second one-way valve;

[0030] 400. Heat exchange fan. DETAILED DESCRIPTION

[0031] 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.

[0032] 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 describe the embodiments of the present disclosure herein. In addition, the terms "including," "having," and any variations thereof are intended to cover non-exclusive inclusions.

[0033] In the embodiments of the present disclosure, the terms "upper", "lower", "inside", "middle", "outside", "front", "back" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are mainly intended to better describe the embodiments of the present disclosure and their embodiments, and are not intended to limit the indicated devices, elements or components to having 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 certain circumstances. 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.

[0034] Furthermore, the terms "disposed," "connected," and "installed" should be interpreted broadly. For example, "connected" can mean a mounted 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 internal communication 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.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] 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.

[0037] The embodiment of the present disclosure provides an air conditioning heat exchanger, such as Figures 1 to 4 As shown, the air conditioning heat exchanger includes multiple heat exchange tube groups 100 and a throttling device 200. The multiple heat exchange tube groups 100 are stacked in sequence along the direction of air flow through the air conditioning heat exchanger, allowing air to flow through the multiple heat exchange tube groups 100 in sequence. Each heat exchange tube group 100 includes one or more heat exchange tube segments. The throttling device 200 is disposed between two adjacent heat exchange tube groups 100 and / or between two adjacent heat exchange tube segments.

[0038] In this embodiment, the air conditioner heat exchanger includes a throttling device 200. The opening degree of throttling device 200 is adjustable, and throttling device 200 can be operated in a throttling state or fully open without throttling. When throttling device 200 is in a throttling state, throttling device 200 can throttle and reduce the pressure of the refrigerant inside throttling device 200, so that the refrigerant pressure downstream of throttling device 200 is lower than the refrigerant pressure upstream of throttling device 200. When throttling device 200 is fully open without throttling, throttling device 200 acts as a connecting pipe, and the refrigerant circulates within throttling device 200.

[0039] A throttling device 200 is provided between two adjacent heat exchange tube groups 100, and / or a throttling device 200 is provided between two adjacent heat exchange tube sections of a heat exchange tube group 100. When the throttling device 200 is throttling, the refrigerant pressure within the heat exchange tube group 100 or heat exchange tube section downstream of the throttling device 200 is reduced, allowing the heat exchange tube group 100 or heat exchange tube section upstream of the throttling device 200 to condense and release heat, while the heat exchange tube group 100 or heat exchange tube section downstream of the throttling device 200 can evaporate and absorb heat. Furthermore, multiple heat exchange tube groups 100 are stacked in sequence along the direction of air flow through the air conditioner heat exchanger. In this way, air can first flow through the heat exchange tube group 100 or heat exchange tube section downstream of the throttling device 200 to cool and dehumidify, and then flow through the heat exchange tube group 100 or heat exchange tube section upstream of the throttling device 200 to heat up. Therefore, the air conditioning heat exchanger can not only cool and dehumidify the air, but also increase the temperature of the air, reduce the overall cooling amount of the air conditioning heat exchanger on the room during the dehumidification process, improve the user's comfort, and enhance the user experience.

[0040] One or more throttling devices 200 are provided in the air-conditioning heat exchanger. When there are multiple throttling devices 200, the multiple throttling devices 200 can work together to throttle. The temperatures of the heat exchange tube groups 100 or heat exchange tube sections on both sides of the throttling device 200 are different, and the temperature of the heat exchange tube groups 100 or heat exchange tube sections decreases along the flow direction of the refrigerant. Alternatively, when there are multiple throttling devices 200, one throttling device 200 is selected to work for throttling, and the other throttling devices 200 are fully open and not throttling. Under different heat exchange requirements, different throttling devices 200 can be selected to change the number of heat exchange tube groups 100 or heat exchange tube sections that release heat by condensation and absorb heat by evaporation, so as to adjust the cooling capacity and heating capacity, improve the dehumidification diversity of the air-conditioning heat exchanger, meet various dehumidification requirements, and improve the user experience.

[0041] In this embodiment, ports on two heat exchange tube assemblies 100 at either end of the plurality of heat exchange tube assemblies 100 can be connected to the air conditioning system's electronic expansion valve and four-way valve, respectively. The air conditioning heat exchanger is the air conditioning system's indoor heat exchanger. When the air conditioning system is performing cooling and dehumidification, the electronic expansion valve is fully open and unthrottled. High-temperature, high-pressure refrigerant from the compressor flows through the four-way valve to the outdoor heat exchanger. The refrigerant condenses and releases heat within the outdoor heat exchanger. After heat exchange is complete, it flows through the fully open, unthrottled electronic expansion valve.

[0042] The refrigerant flowing out of the electronic expansion valve flows into the air conditioner heat exchanger. It continues to condense and release heat within the upstream heat exchange tube group 100 of the throttling device 200, providing heat to the room. The throttling device 200 throttles and reduces the pressure of the refrigerant, allowing it to evaporate and absorb heat within the downstream heat exchange tube group 100, thus performing cooling and dehumidification. After completing heat exchange within the downstream heat exchange tube group 100, the refrigerant flows back to the compressor's air inlet through the four-way valve, completing a cooling and dehumidification cycle.

[0043] In some optional embodiments, such as Figures 1 to 3 As shown, multiple heat exchange tube groups 100 include a first heat exchange tube group 110, the first heat exchange tube group 110 includes a first heat exchange tube segment 111 and a second heat exchange tube segment 112 that are connected to each other, a first throttling device 210 is provided between the first heat exchange tube segment 111 and the second heat exchange tube segment 112, and the throttling device 200 includes the first throttling device 210.

[0044] In this embodiment, the first heat exchange tube group 110 includes a first heat exchange tube segment 111 and a second heat exchange tube segment 112 that are interconnected, and a first throttling device 210 is provided between the first heat exchange tube segment 111 and the second heat exchange tube segment 112. For example, the refrigerant flows sequentially in the first heat exchange tube segment 111 and the second heat exchange tube segment 112, and the first throttling device 210 operates to throttle.

[0045] At this time, the first heat exchange pipe section 111 is the upstream heat exchange pipe section of the first throttling device 210, and the refrigerant condenses and releases heat in the first heat exchange pipe section 111 to heat the air; the second heat exchange pipe section 112 is the downstream heat exchange pipe section of the second throttling device 220, and the refrigerant evaporates and absorbs heat in the second heat exchange pipe section 112 to cool and dehumidify the air.

[0046] Using this optional embodiment, the heat exchange tube group 100 includes multiple heat exchange tube sections, and a throttling device 200 is provided between the heat exchange tube sections. The heat exchange tube sections involved in cooling and dehumidification and the heat exchange tube ends involved in heating and temperature rise in the air-conditioning heat exchanger can be adjusted by opening and closing the throttling device 200, so as to increase the usage scenarios of the air-conditioning heat exchanger and improve the user experience.

[0047] In some optional embodiments, such as Figure 1 、 Figure 2 and Figure 4 As shown, the multiple heat exchange tube groups 100 also include a second heat exchange tube group 120 and a third heat exchange tube group 130. The first port of the second heat exchange tube group 120 is used to communicate with the electronic expansion valve of the air-conditioning system, the second port of the second heat exchange tube group 120 is communicated with the first port of the first heat exchange tube segment 111, the second port of the first heat exchange tube segment 111 is communicated with the first port of the third heat exchange tube group 130, and the second port of the third heat exchange tube group 130 is used to communicate with the four-way valve of the air-conditioning system segment.

[0048] A second throttling device 220 is provided between the first port of the second heat exchange tube segment 112 and the first port of the third heat exchange tube group 130, and the throttling device 200 includes the second throttling device 220. Alternatively, a third throttling device 230 is provided between the first port of the second heat exchange tube group 120 and the first port of the first heat exchange tube segment 111, and the throttling device 200 includes the third throttling device 230.

[0049] In this embodiment, the first port of the second heat exchange tube group 120 is used to communicate with the electronic expansion valve of the air conditioning system, the second port of the second heat exchange tube group 120 is used to communicate with the first port of the first heat exchange tube segment 111, the second port of the first heat exchange tube segment 111 is used to communicate with the first port of the third heat exchange tube group 130, and the second port of the third heat exchange tube group 130 is used to communicate with the four-way valve of the air conditioning system. In this way, the refrigerant can flow through the second heat exchange tube group 120, the first heat exchange tube segment 111, the second heat exchange tube segment 112, and the third heat exchange tube group 130 in sequence.

[0050] For example, the throttling device 200 in an air conditioner heat exchanger includes a first throttling device 210 and a second throttling device 220. The first throttling device 210 and the second throttling device 220 can selectively operate in throttling mode while the other can operate in non-throttling mode. This allows the heat exchange tube group 100 involved in cooling and dehumidification to be adjusted to the heat exchange tube group 100 involved in heating and temperature increase during dehumidification, depending on the operating state of the throttling device 200. This increases the use scenarios of the air conditioner heat exchanger and enhances the user experience.

[0051] For example, Figure 2 As shown, in the cooling and dehumidification mode, the refrigerant in the air conditioner heat exchanger can flow sequentially through the second heat exchange tube group 120, the first heat exchange tube segment 111, the first throttling device 210, the second heat exchange tube segment 112, the second throttling device 220, and the third heat exchange tube group 130. In the first dehumidification mode, the first throttling device 210 operates in a throttling manner, while the second throttling device 220 is fully open and unthrottling. At this time, the refrigerant condenses and releases heat in the second heat exchange tube group 120 and the first heat exchange tube segment 111, and evaporates and absorbs heat in the second heat exchange tube segment 112 and the third heat exchange tube group 130. In the second dehumidification mode, the first throttling device 210 operates in a throttling manner, while the second throttling device 220 operates in a throttling manner. At this time, the refrigerant condenses and releases heat in the second heat exchange tube group 120 and the first heat exchange tube group 110, and evaporates and absorbs heat in the third heat exchange tube group 130. Thus, the heating capacity of the air conditioner heat exchanger in the second dehumidification mode is greater than that in the first dehumidification mode. The heating capacity of the air-conditioning heat exchanger can be selected according to the user-set temperature and the actual indoor temperature, thereby selecting the first throttling device 210 or the second throttling device 220 as the working throttling state, thereby improving the effectiveness of indoor temperature regulation and enhancing the user experience.

[0052] In some optional embodiments, along the direction of air flowing through the air conditioner heat exchanger, the second heat exchange pipe section 112 and the first heat exchange pipe section 111 are stacked in sequence. Figure 2 and Figure 3 As shown, the first heat exchange pipe section 111 and the second heat exchange pipe section 112 are arranged in parallel.

[0053] In this embodiment, when the first throttling device 210 is throttled, the refrigerant condenses and releases heat in the first heat exchange tube segment 111, and evaporates and absorbs heat in the second heat exchange tube segment 112. Along the direction of air flow through the air conditioner heat exchanger, the second heat exchange tube segment 112 and the first heat exchange tube segment 111 are stacked in sequence. Air first flows through the second heat exchange tube segment 112, where it cools and dehumidifies the air. After this, the air then flows through the first heat exchange tube segment 111, where it heats and raises the temperature of the air. This not only dehumidifies the indoor air, but also increases the air temperature, reducing user discomfort caused by low temperatures and improving the user experience.

[0054] In some optional embodiments, such as Figure 3 As shown, the second heat exchange tube group 120 includes multiple third heat exchange tube segments 121, and the multiple third heat exchange tube segments 121 are arranged in parallel or in series; when the multiple third heat exchange tube segments 121 are arranged in series, a fourth throttling device is provided between two adjacent third heat exchange tube segments 121, and the throttling device 200 includes a fourth throttling device.

[0055] In this embodiment, multiple third heat exchange tube segments 121 are arranged in parallel or in series, which increases the design flexibility of the third heat exchange tube group 130, allowing the third heat exchange tube group 130 to be optimized according to different application requirements and working conditions, thereby improving the energy efficiency of the air conditioning heat exchanger.

[0056] Arranging multiple third heat exchange tube segments 121 in parallel can improve the heat exchange efficiency of the third heat exchange tube group 130 and promote rapid heat exchange. Arranging multiple third heat exchange tube segments 121 in series, with a fourth throttling device positioned between two adjacent third heat exchange tube segments 121, allows for different heat exchange conditions between the third heat exchange tube segments 121 and the heat exchange tube group 100 on either side of the fourth throttling device. This can alter the heating capacity of the air conditioning heat exchanger, add a dehumidification mode, expand the use scenarios of the air conditioning heat exchanger, and enhance the user experience.

[0057] In some optional embodiments, such as Figure 3 As shown, the third heat exchange tube group 130 includes multiple fourth heat exchange tube segments 131, and the multiple fourth heat exchange tube segments 131 are arranged in parallel or in series; when the multiple fourth heat exchange tube segments 131 are arranged in series, a fifth throttling device is provided between two adjacent fourth heat exchange tube segments 131, and the throttling device 200 includes a fifth throttling device.

[0058] In this embodiment, multiple fourth heat exchange tube segments 131 are arranged in parallel or in series, which increases the design flexibility of the fourth heat exchange tube group 100, enables the fourth heat exchange tube group 100 to be optimized according to different application requirements and working conditions, and improves the energy efficiency of the air conditioning heat exchanger.

[0059] Arranging multiple fourth heat exchange tube segments 131 in parallel can improve the heat exchange efficiency of the fourth heat exchange tube group 100 and promote rapid heat exchange. Arranging multiple fourth heat exchange tube segments 131 in series, with a fifth throttling device provided between two adjacent fourth heat exchange tube segments 131, allows for different heat exchange conditions between the fourth heat exchange tube segments 131 and the heat exchange tube group 100 on either side of the fifth throttling device. This can alter the heating capacity of the air conditioning heat exchanger, add a dehumidification mode, expand the use scenarios of the air conditioning heat exchanger, and enhance the user experience.

[0060] In some optional embodiments, the ratio of the sum of the heat exchange tube lengths of the second heat exchange tube group 120 and the first heat exchange tube segment 111 to the sum of the heat exchange tube lengths of the second heat exchange tube segment 112 and the third heat exchange tube group 130 ranges from 0.8 to 1.2.

[0061] In this embodiment, the ratio of the sum of the heat exchange tube lengths of the second heat exchange tube group 120 and the first heat exchange tube segment 111 to the sum of the heat exchange tube lengths of the second heat exchange tube segment 112 and the third heat exchange tube group 130 is in a range of 0.8 to 1.2. In this way, when the first throttling device 210 is throttling and the other throttling devices 200 are fully open and not throttling, the heating capacity of the second heat exchange tube group 120 and the first heat exchange tube segment 111 can be equivalent to the total cooling capacity of the second heat exchange tube segment 112 and the third heat exchange tube group 130, thereby improving the reasonable distribution of the heat exchange capacity of the multiple heat exchange tube groups 100 and improving the temperature regulation effect during the dehumidification process.

[0062] Optionally, the ratio of the sum of the heat exchange tube lengths of the second heat exchange tube group 120 and the first heat exchange tube segment 111 to the sum of the heat exchange tube lengths of the second heat exchange tube segment 112 and the third heat exchange tube group 130 may be 0.8, 0.85, 0.9, 0.95, 1, 1.05, 1.1, 1.15, or 1.2. Alternatively, the ratio may be 0.83, 0.88, 0.93, 0.98, 1.03, 1.08, 1.13, or 1.18.

[0063] Exemplarily, the length of the heat exchange tubes of the second heat exchange tube segment 112 is less than or equal to the length of the heat exchange tubes of the third heat exchange tube group 130 .

[0064] In this embodiment, taking the example of a throttling device 200 comprising a first throttling device 210 and a second throttling device 220, during the cooling and dehumidification process, the refrigerant constantly evaporates and absorbs heat within the third heat exchange tube group 130. In this embodiment, the length of the heat exchange tubes of the second heat exchange tube segment 112 is less than or equal to the length of the heat exchange tubes of the third heat exchange tube group 130 to ensure the cooling and dehumidification efficiency of the air conditioner heat exchanger, reduce the occurrence of poor dehumidification efficiency caused by a short length of heat exchange tubes through which the refrigerant involved in evaporation and heat absorption flows, and improve the stability and reliability of the air conditioner heat exchanger.

[0065] In some optional embodiments, such as Figures 1 to 3 As shown, the air conditioning heat exchanger further includes a heat exchange fan 400 , and along the air outlet direction of the heat exchange fan 400 , the third heat exchange tube group 130 , the first heat exchange tube group 110 and the second heat exchange tube group 120 are stacked in sequence.

[0066] In this embodiment, when the first throttling device 210 or the second throttling device 220 is throttling, the refrigerant constantly evaporates and absorbs heat in the third heat exchange tube group 130, while the refrigerant constantly condenses and releases heat in the second heat exchange tube group 120. Along the outlet direction of the heat exchange blower 400, the third heat exchange tube group 130, the first heat exchange tube group 110, and the second heat exchange tube group 120 are stacked in sequence. In this way, the heat exchange blower 400 can drive air to flow through the third heat exchange tube group 130, the first heat exchange tube group 110, and the second heat exchange tube group 120 in sequence, so that the air is first cooled and dehumidified before being heated to room temperature. This increases the temperature of the dehumidified air, reduces user discomfort caused by low air temperatures, and improves the user experience.

[0067] In some optional embodiments, such as Figures 1 to 3 As shown, the air conditioning heat exchanger also includes a first one-way valve 310 and a second one-way valve 320. The inlet end of the first one-way valve 310 is connected to the second port of the second heat exchange pipe section 112, and the inlet end of the first one-way valve 310 is connected to the first port of the third heat pipe group, and the outlet end of the first one-way valve 310 is connected to the first port of the second heat exchange pipe group 120.

[0068] The inlet end of the second one-way valve 320 is connected to the second port of the third heat exchange tube group 130, the outlet end of the second one-way valve 320 is connected to the second port of the first heat exchange tube segment 111, and the outlet end of the second one-way valve 320 is connected to the first port of the second heat exchange tube segment 112.

[0069] In this embodiment, the air conditioning heat exchanger further includes a first one-way valve 310 and a second one-way valve 320. The inlet end of the first one-way valve 310 is connected to the second port of the second heat exchange tube segment 112, and the inlet end of the first one-way valve 310 is connected to the first port of the third heat exchange tube group 130. In other words, the inlet end of the first one-way valve 310 is connected to the connecting pipe between the second port of the second heat exchange tube segment 112 and the first port of the third heat exchange tube group 130. The refrigerant flowing out of the first port of the third heat exchange tube group 130 and the second port of the second heat exchange tube segment 112 can flow into the first one-way valve 310. The outlet end of the first one-way valve 310 is connected to the first port of the second heat exchange tube group 120. The refrigerant flowing into the first one-way valve 310 can flow out of the air conditioning heat exchanger through the first port of the second heat exchange tube group 120.

[0070] The inlet of the second one-way valve 320 communicates with the second port of the third heat exchange tube group 130. Refrigerant flowing into the air conditioner heat exchanger through the second port of the third heat exchange tube group 130 can flow into the second one-way valve 320. The outlet of the second one-way valve 320 communicates with the first port of the second heat exchange tube segment 112, and the outlet of the second one-way valve 320 communicates with the second port of the first heat exchange tube segment 111. The outlet of the second one-way valve 320 communicates with the connecting pipe between the first port of the second heat exchange tube segment 112 and the second port of the first heat exchange tube group 110. In this way, the refrigerant flowing out of the second one-way valve 320 can flow into the first heat exchange tube segment 111, the second heat exchange tube group 120, and the second heat exchange tube segment 112, respectively.

[0071] In this embodiment, Figure 3 As shown, when the air conditioning system is in heating mode, refrigerant flows into the air conditioning heat exchanger through the second port of the third heat exchange tube group 130. At this point, the inlet of the second one-way valve 320 is connected to the second port of the third heat exchange tube group 130, allowing refrigerant to flow into the third heat exchange tube group 130, the first heat exchange tube segment 111, the second heat exchange tube group 120, and the second heat exchange tube segment 112. Furthermore, refrigerant flowing out of the third heat exchange tube group 130 and the second heat exchange tube segment 112 can flow directly through the first one-way valve 310 to the first port of the second heat exchange tube group 120, where it can exit the air conditioning heat exchanger. In this way, the third heat exchange tube group 130, the first heat exchange tube segment 111, the second heat exchange tube group 120, and the second heat exchange tube segment 112 are arranged in parallel via the first one-way valve 310 and the second one-way valve 320, increasing the heating capacity of the air conditioning heat exchanger in heating mode and enhancing the user experience.

[0072] In addition, the outlet end of the first one-way valve 310 is connected to the first port of the second heat exchange tube group 120, and the outlet end of the second one-way valve 320 is connected to the first port of the second heat exchange tube section 112. When the air-conditioning system performs cooling and dehumidification, the first one-way valve 310 and the second one-way valve 320 are not connected, so that the refrigerant can flow in the second heat exchange tube group 120, the first heat exchange tube group 110 and the third heat exchange tube group 130 in sequence, so as to heat and heat or cool and dehumidify in different heat exchange tube groups 100, thereby improving the working reliability and stability of the air-conditioning heat exchanger and improving the user experience.

[0073] An embodiment of the present disclosure provides an air-conditioning heat exchanger, comprising the air-conditioning system according to any one of the above embodiments.

[0074] The air-conditioning heat exchanger provided in the embodiment of the present disclosure includes the air-conditioning system described in any one of the above embodiments, and thus has all the beneficial effects of the air-conditioning system described in any one of the above embodiments, which will not be described in detail here.

[0075] 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. An air conditioning heat exchanger, characterized in that: include: Multiple heat exchange tube groups are stacked in sequence along the direction of air flowing through the air conditioner heat exchanger, so that air can flow through the multiple heat exchange tube groups in sequence, and each heat exchange tube group includes one or more heat exchange tube sections; The throttling device is arranged between two adjacent heat exchange tube groups and / or between two adjacent heat exchange tube sections.

2. The air conditioning heat exchanger according to claim 1, characterized in that: Multiple heat exchange tube groups include: The first heat exchange tube group includes a first heat exchange tube section and a second heat exchange tube section that are connected to each other. A first throttling device is provided between the first heat exchange tube section and the second heat exchange tube section. The throttling device includes a first throttling device.

3. The air conditioning heat exchanger according to claim 2, characterized in that: The multiple heat exchange tube groups further include a second heat exchange tube group and a third heat exchange tube group, wherein the first port of the second heat exchange tube group is used to communicate with the electronic expansion valve of the air conditioning system, the second port of the second heat exchange tube group is used to communicate with the first port of the first heat exchange tube segment, the second port of the first heat exchange tube segment is used to communicate with the first port of the third heat exchange tube group, and the second port of the third heat exchange tube group is used to communicate with the four-way valve of the air conditioning system; Among them, a second throttling device is provided between the first port of the second heat exchange tube segment and the first port of the third heat exchange tube group, and the throttling device includes a second throttling device; and / or, a third throttling device is provided between the first port of the second heat exchange tube group and the first port of the first heat exchange tube segment, and the throttling device includes a third throttling device.

4. The air conditioning heat exchanger according to claim 3, characterized in that: The second heat exchange tube group includes a plurality of third heat exchange tube segments, the plurality of third heat exchange tube segments are arranged in parallel or in series, and when the plurality of third heat exchange tube segments are arranged in series, a fourth throttling device is provided between two adjacent third heat exchange tube segments, the throttling device including the fourth throttling device; and / or, The third heat exchange tube group includes multiple fourth heat exchange tube segments, which are arranged in parallel or in series. When the multiple fourth heat exchange tube segments are arranged in series, a fifth throttling device is provided between two adjacent fourth heat exchange tube segments, and the throttling device includes a fifth throttling device.

5. The air conditioning heat exchanger according to claim 3, characterized in that: Also includes: a first one-way valve, the inlet end of which is in communication with the second port of the second heat exchange tube segment, the inlet end of which is in communication with the first port of the third heat exchange tube group, and the outlet end of which is in communication with the first port of the second heat exchange tube group; The second one-way valve has an inlet end connected to the second port of the third heat exchange tube group, an outlet end connected to the second port of the first heat exchange tube segment, and an outlet end connected to the first port of the second heat exchange tube segment.

6. The air conditioning heat exchanger according to claim 3, characterized in that: The ratio of the sum of the lengths of the heat exchange tubes of the second heat exchange tube group and the first heat exchange tube segment to the sum of the lengths of the heat exchange tubes of the second heat exchange tube segment and the third heat exchange tube group is in a range of 0.8 to 1.

2.

7. The air conditioning heat exchanger according to claim 6, characterized in that: The length of the heat exchange tubes of the second heat exchange tube section is less than or equal to the length of the heat exchange tubes of the third heat exchange tube group.

8. The air conditioning heat exchanger according to claim 3, characterized in that: The air conditioning heat exchanger also includes a heat exchange fan. Along the air outlet direction of the heat exchange fan, the third heat exchange tube group, the first heat exchange tube group and the second heat exchange tube group are stacked in sequence.

9. The air conditioning heat exchanger according to any one of claims 2 to 8, characterized in that: Along the direction of air flowing through the air conditioner heat exchanger, the first heat exchange pipe section and the second heat exchange pipe section are stacked in sequence, or the first heat exchange pipe section and the second heat exchange pipe section are arranged in parallel.

10. An air conditioning system, characterized in that: include: The air conditioning heat exchanger according to any one of claims 1 to 9.

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