Air conditioner
By designing a refrigerant circulation loop and bypass branch in the air conditioner and using multiple throttling devices to control the temperature difference of the heat exchange units, dehumidification and reheating are achieved, solving the problem of excessively low air temperature after dehumidification and improving the user experience.
Patent Information
- Application Number
- CN202520133777.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-20
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-01-20
AI Technical Summary
The air temperature is low after dehumidification, resulting in a poor user experience.
The air conditioner is designed with a structure that includes a refrigerant circulation loop, a bypass branch, and multiple throttling devices. By controlling the state of the throttling devices, the first and second heat exchange units can achieve the same or different heat exchange temperatures to achieve the dehumidification and reheating effect.
It increases the temperature of the air after dehumidification, thus improving the user experience.
Smart Images
Figure CN223782969U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of air conditioner technology, and for example, to an air conditioner. Background Technology
[0002] Currently, air conditioners have become an indispensable appliance, widely used in many fields such as homes, businesses, and transportation, to regulate air parameters, such as cooling, heating, and dehumidification.
[0003] The related technology discloses an air conditioner with a throttling device between an indoor heat exchanger and an outdoor heat exchanger. When the air conditioner operates in dehumidification mode, the throttling device reduces pressure and allows the indoor heat exchanger to function as an evaporator. Furthermore, air is dehumidified as it flows through the indoor heat exchanger.
[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:
[0005] The air temperature is low after dehumidification, which leads to a poor user experience when it is blown into the room.
[0006] It should be noted that the information disclosed in the background section above 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 those skilled in the art. Utility Model Content
[0007] To provide a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. This summary is not intended as a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these embodiments, but rather as a prelude to the detailed description that follows.
[0008] This disclosure provides an air conditioner that solves the problem of poor user experience caused by low temperature of dehumidified air.
[0009] In some embodiments, the air conditioner includes:
[0010] The refrigerant circulation loop consists of a compressor, a four-way valve, an outdoor heat exchanger, a first throttling device, and an indoor heat exchanger connected in series; wherein, the indoor heat exchanger includes a first heat exchange unit and a second heat exchange unit, and the first heat exchange unit is connected in series with the second heat exchange unit through the second throttling device.
[0011] The bypass branch has its first end connected between the outdoor heat exchanger and the four-way valve, and its second end connected between the first throttling device and the first heat exchange unit; in addition, a third throttling device is provided on the bypass branch.
[0012] Optionally, the air conditioner has a heating and dehumidification mode, which corresponds to the compressor being connected to the outdoor heat exchanger through a four-way valve, and the first throttling device being closed, the second throttling device being throttled, and the third throttling device being fully open.
[0013] Optionally, the air conditioner has a constant temperature dehumidification mode, which corresponds to the compressor being connected to the outdoor heat exchanger through a four-way valve, and the first throttling device, the second throttling device, and the third throttling device throttling.
[0014] Optionally, the air conditioner has a cooling and dehumidification mode. The constant temperature and dehumidification mode corresponds to the compressor being connected to the outdoor heat exchanger through a four-way valve, with the first throttling device throttling, the second throttling device fully open, and the third throttling device closed.
[0015] Optionally, when the compressor is connected to the outdoor heat exchanger via a four-way valve, the second heat exchange unit is located downstream of the first heat exchange unit along the refrigerant circulation loop.
[0016] Optionally, the first heat exchange unit and the second heat exchange unit are arranged side by side;
[0017] Furthermore, along the airflow direction, the first heat exchange unit is located on the leeward side of the second heat exchange unit.
[0018] Optionally, the air conditioner also includes:
[0019] The fan assembly is located on one side of the indoor heat exchanger, and the airflow direction of the fan assembly is from the second heat exchange unit to the first heat exchange unit.
[0020] Optionally, the first throttling device includes a first electronic expansion valve.
[0021] Optionally, the second throttling device includes a second electronic expansion valve.
[0022] Optionally, the third throttling device includes a third electronic expansion valve.
[0023] The air conditioner provided in this disclosure can achieve the following technical effects:
[0024] During dehumidification, the compressor discharges high-temperature, high-pressure refrigerant to the outdoor heat exchanger through a four-way valve. By controlling the states of the first, second, and third throttling devices, the first and second heat exchange units can be made to achieve the same or different heat exchange temperatures. When the heat exchange temperatures of the first and second heat exchange units are the same, both units simultaneously perform dehumidification. When the heat exchange temperatures of the first and second heat exchange units differ, the heat exchange unit with the lower temperature performs the dehumidification function, while the heat exchange unit with the higher temperature heats the dehumidified air. This achieves a dehumidification and reheating effect, improving the user experience.
[0025] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description
[0026] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:
[0027] Figure 1 This is a schematic diagram of the structure of an air conditioner provided in an embodiment of this disclosure;
[0028] Figure 2 This is a schematic diagram of the refrigerant flow direction under the heating and dehumidification mode provided in the embodiments of this disclosure;
[0029] Figure 3 This is a schematic diagram of the refrigerant flow direction under constant temperature dehumidification mode provided in the embodiments of this disclosure;
[0030] Figure 4 This is a schematic diagram of the refrigerant flow direction under the refrigeration and dehumidification mode provided in the embodiments of this disclosure.
[0031] Figure label:
[0032] 100. Compressor; 110. Outdoor heat exchanger; 120. Indoor heat exchanger; 121. First heat exchange unit; 122. Second heat exchange unit; 130. Bypass branch;
[0033] 200. Four-way valve; 210. First throttling device; 220. Second throttling device; 230. Third throttling device. Detailed Implementation
[0034] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.
[0035] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for describing embodiments of this disclosure herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.
[0036] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better description of the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in the embodiments of this disclosure according to the specific circumstances.
[0037] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.
[0038] Unless otherwise stated, the term "multiple" means two or more.
[0039] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.
[0040] 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.
[0041] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.
[0042] Combination Figure 1-4 As shown in the figure, this disclosure provides an air conditioner, which includes a refrigerant circulation loop. The refrigerant circulation loop is composed of a compressor 100, a four-way valve 200, an outdoor heat exchanger 110, a first throttling device 210, and an indoor heat exchanger 120 connected in series. The four-way valve 200 has ports C, D, E, and S.
[0043] When cooling Figure 1As shown, the four-way valve 200 has ports d and e connected, and ports s and c connected. The compressor 100 sequentially draws in low-temperature, low-pressure refrigerant gas from the indoor heat exchanger 120 through ports s and c, compressing it into a high-temperature, high-pressure gas. Then, the high-temperature, high-pressure refrigerant gas sequentially enters the outdoor heat exchanger 110 through ports d and e, releasing heat to the external environment through heat exchange with the outside air, while simultaneously cooling itself and forming a high-pressure liquid. When the high-pressure liquid passes through the first throttling device 210, the temperature and pressure of the refrigerant are further reduced through throttling and pressure reduction. The low-pressure refrigerant liquid then enters the indoor heat exchanger 120 and exchanges heat with the indoor hot air. After absorbing heat from the hot air, the refrigerant changes from a liquid to a gaseous state, simultaneously lowering the temperature of the indoor air, thereby achieving the purpose of indoor cooling.
[0044] In this way, the refrigerant continuously circulates, forming a complete refrigerant circulation loop: the compressor 100 compresses the refrigerant into a high-temperature, high-pressure gas; the outdoor heat exchanger 110 cools the refrigerant into a high-pressure liquid; the first throttling device 210 throttles and reduces the pressure of the refrigerant; the indoor heat exchanger 120 absorbs indoor heat and evaporates the refrigerant into gas, which then re-enters the compressor 100 for recompression. Through this continuous refrigerant circulation, the air conditioner can effectively regulate the indoor temperature, providing a comfortable indoor environment. Understandably, the refrigerant flow direction is reversed during heating.
[0045] In some embodiments, such as Figure 1 As shown, the air conditioner also includes a bypass branch 130. The indoor heat exchanger 120 includes a first heat exchange unit 121 and a second heat exchange unit 122, with the first heat exchange unit 121 connected in series with the second heat exchange unit 122 via a second throttling device 220. The first end of the bypass branch 130 connects to the outdoor heat exchanger 110 and the four-way valve 200, and its second end connects to the first throttling device 210 and the first heat exchange unit 121. Furthermore, a third throttling device 230 is provided on the bypass branch 130.
[0046] In this embodiment, during dehumidification, the compressor 100 discharges high-temperature, high-pressure refrigerant to the outdoor heat exchanger 110 through the four-way valve 200. By controlling the states of the first throttling device 210, the second throttling device 220, and the third throttling device 230, the first heat exchange unit 121 and the second heat exchange unit 122 can achieve the same or different heat exchange temperatures. When the heat exchange temperatures of the first heat exchange unit 121 and the second heat exchange unit 122 are the same, both heat exchange units can simultaneously perform dehumidification. When the heat exchange temperatures of the first heat exchange unit 121 and the second heat exchange unit 122 are different, the heat exchange unit with the lower temperature is used for dehumidification, while the heat exchange unit with the higher temperature is used to heat the dehumidified air. In this way, a dehumidification and reheating effect can be achieved, improving the user experience.
[0047] Optionally, the air conditioner has a heating and dehumidifying mode. For example... Figure 2 As shown, the heating and dehumidification mode corresponds to the compressor 100 being connected to the outdoor heat exchanger 110 through the four-way valve 200, and the first throttling device 210 being closed, the second throttling device 220 being throttled, and the third throttling device 230 being fully open.
[0048] In this embodiment, when the first throttling device 210 is closed, the refrigerant flow is blocked at the first throttling device 210. When the second throttling device 220 is used for throttling, it reduces the pressure of the flowing refrigerant. When the third throttling device 230 is fully open, the refrigerant is allowed to flow through the third throttling device 230 without any throttling effect, and the bypass branch 130 is open at this time.
[0049] Because the refrigerant flow is blocked at the first throttling device 210, the high-temperature refrigerant discharged from the compressor 100 flows sequentially through the four-way valve 200 and the bypass branch 130 to the first heat exchange unit 121. Then, the refrigerant in the first heat exchange unit 121 flows to the second heat exchange unit 122 through the second throttling device 220. Under the throttling and pressure reduction effect of the second throttling device 220, low-temperature refrigerant flows in the second heat exchange unit 122. Here, the first heat exchange unit 121 can be regarded as a condenser, and the second heat exchange unit 122 can be regarded as an evaporator. At this time, the second heat exchange unit 122 dehumidifies the air flowing through it, and the first heat exchange unit 121 heats the dehumidified air. Because the refrigerant does not flow through the outdoor heat exchanger 110, the heat of the first heat exchange unit 121 is relatively high. After the dehumidified air exchanges heat with the first heat exchange unit 121, the temperature of the air after heat exchange is higher than the temperature of the indoor air. Therefore, while heating and dehumidifying the air, it can also increase the indoor temperature, hence the name heating and dehumidification mode.
[0050] For example, if a user's comfort temperature is 20℃ in winter, and the current indoor temperature is 16℃, and the user also needs dehumidification, the user can turn on the air conditioner's heating and dehumidification mode. When the air conditioner receives the operating mode command, the controller closes the first throttling device 210, throttles the second throttling device 220, and fully opens the third throttling device 230. At this time, the refrigerant circulation path is as follows: the compressor 100 discharges high-temperature refrigerant sequentially through ports d and e of the four-way valve 200; then the refrigerant flows through the bypass branch 130 to the first heat exchange unit 121; after being throttled by the second throttling device 220, it flows to the second heat exchange unit 122; finally, the refrigerant returns to the compressor 100 sequentially through ports s and c of the four-way valve 200. In this way, in the heating and dehumidification mode, the second heat exchange unit 122 is used to dehumidify, thereby meeting the user's need to reduce humidity; the first heat exchange unit 121 is used to heat the dehumidified air and increase the indoor temperature, thereby making the indoor temperature reach 20°C, thus meeting the user's need to increase the temperature.
[0051] Optionally, the air conditioner has a constant temperature and dehumidification mode. For example... Figure 3 As shown, the constant temperature dehumidification mode corresponds to the compressor 100 being connected to the outdoor heat exchanger 110 through the four-way valve 200, and the first throttling device 210 throttling, the second throttling device 220 throttling, and the third throttling device 230 throttling.
[0052] In this embodiment, the first throttling device 210 throttles and reduces the pressure of the refrigerant flowing through it. The second throttling device 220 also throttles and reduces the pressure of the refrigerant flowing through it. The third throttling device 230 further throttles and reduces the pressure of the refrigerant flowing through it. Thus, the simultaneous throttling by all three devices aims to adjust the heat output of the outdoor heat exchanger 110, ensuring that the heat output of the first heat exchange unit 121 can achieve constant temperature dehumidification.
[0053] Since both the first throttling device 210 and the third throttling device 230 are open and throttled, the high-temperature refrigerant discharged from the compressor 100 flows to the four-way valve 200. After passing through the four-way valve 200, the refrigerant has two flow paths: one is through the outdoor heat exchanger 110 to the first throttling device 210, and the other is along the bypass branch 130 to the third throttling device 230. Furthermore, the refrigerant from the two flow paths merges and flows to the first heat exchange unit 121. Since the second throttling device 220 is open and throttled, low-temperature refrigerant flows in the second heat exchange unit 122. Here, the temperature of the first heat exchange unit 121 is higher than the temperature of the second heat exchange unit 122. Also, because some heat has dissipated after the refrigerant flows through the outdoor heat exchanger 110, the temperature of the first heat exchange unit 121 in the constant temperature dehumidification mode is lower than the temperature of the first heat exchange unit 121 in the heating dehumidification mode. Alternatively, in the constant temperature dehumidification mode, the heat exchange temperature of the first heat exchange unit 121 is lower than the indoor air temperature. In this way, after the dehumidified air exchanges heat with the first heat exchange unit 121, the temperature of the dehumidified air can be equal to the temperature of the indoor air. Therefore, it can heat the dehumidified air, but it cannot further increase the indoor temperature.
[0054] For example, if a user's comfort temperature in winter is 20℃, and the current indoor temperature is also 20℃, and the user also needs dehumidification, the user can turn on the air conditioner's constant temperature dehumidification mode. When the air conditioner receives the operating mode command, the controller controls the first throttling device 210, the second throttling device 220, and the third throttling device 230. At this time, the refrigerant circulation path is as follows: the compressor 100 discharges high-temperature refrigerant sequentially through the d and e ports of the four-way valve 200. Then, the refrigerant has two flow paths: one is through the outdoor heat exchanger 110 to the first throttling device 210, and the other is along the bypass branch 130 to the third throttling device 230. Furthermore, the refrigerant from the two flow paths merges and flows to the first heat exchange unit 121. Next, after being throttled by the second throttling device 220, it flows to the second heat exchange unit 122. Finally, the refrigerant returns to the compressor 100 sequentially through the s and c ports of the four-way valve 200. In this way, under constant temperature and dehumidification mode, the second heat exchange unit 122 is used to dehumidify, thereby meeting the user's need to reduce humidity; the first heat exchange unit 121 is used to heat the dehumidified air, thereby maintaining the indoor temperature at 20°C, thus meeting the user's need to maintain the temperature.
[0055] Optionally, the air conditioner has a cooling and dehumidifying mode. For example... Figure 4 As shown, the constant temperature dehumidification mode corresponds to the compressor 100 being connected to the outdoor heat exchanger 110 through the four-way valve 200, with the first throttling device 210 throttling, the second throttling device 220 fully open, and the third throttling device 230 closed.
[0056] In this embodiment, when the first throttling device 210 is throttling, it reduces the pressure of the refrigerant flowing through it. When the second throttling device 220 is fully open, the refrigerant flows through it without throttling, meaning the temperatures of the first heat exchange unit 121 and the second heat exchange unit 122 are the same. When the third throttling device 230 is closed, it blocks the refrigerant flow, and the bypass branch 130 is also blocked.
[0057] Because the bypass branch 130 is blocked, the high-temperature refrigerant discharged from the compressor 100 flows to the outdoor heat exchanger 110 through the four-way valve 200. Then, the refrigerant in the outdoor heat exchanger 110 flows to the first heat exchange unit 121 through the first throttling device 210. Under the throttling and pressure reduction effect of the first throttling device 210, low-temperature refrigerant flows within the first heat exchange unit 121. Next, the refrigerant in the first heat exchange unit 121 flows to the second heat exchange unit 122 through the third throttling device 230. Because the third throttling device 230 is fully open, low-temperature refrigerant also flows within the second heat exchange unit 122. At this time, the first heat exchange unit 121 and the second heat exchange unit 122 simultaneously cool, thus achieving dehumidification; hence, this is called the cooling-dehumidification mode.
[0058] For example, if a user's comfort temperature in summer is 20℃, and the current indoor temperature is 30℃, and the user also needs dehumidification, the user can turn on the air conditioner's cooling / dehumidification mode. When the air conditioner receives the operating mode command, the controller controls the first throttling device 210 to throttle, the second throttling device 220 to fully open, and the third throttling device 230 to close. At this time, the refrigerant circulation path is as follows: the compressor 100 discharges high-temperature refrigerant sequentially through ports d and e of the four-way valve 200; then the refrigerant flows through the outdoor heat exchanger 110 to the first heat exchange unit 121; then through the fully open second throttling device 220 to the second heat exchange unit 122; finally, the refrigerant returns to the compressor 100 sequentially through ports s and c of the four-way valve 200. In this way, in the cooling and dehumidification mode, the first heat exchange unit 121 and the second heat exchange unit 122 are used to dehumidify, thereby meeting the user's need to reduce humidity; at the same time, the first heat exchange unit 121 and the second heat exchange unit 122 are used to reduce the indoor temperature, thereby making the indoor temperature reach 20℃, thus meeting the user's need to reduce temperature.
[0059] Optionally, when the compressor 100 is connected to the outdoor heat exchanger 110 via the four-way valve 200, the second heat exchange unit 122 is located downstream of the first heat exchange unit 121 along the refrigerant circulation loop, such as... Figure 1 As shown.
[0060] In this embodiment, the second heat exchange unit 122 is located downstream of the first heat exchange unit 121. When the second throttling device 220 functions, the first heat exchange unit 121 and the second heat exchange unit 122 can achieve different heat exchange temperatures. When the second throttling device 220 is fully open and not throttling, the first heat exchange unit 121 and the second heat exchange unit 122 can achieve the same heat exchange temperature. As mentioned above, in the heating dehumidification mode or the constant temperature dehumidification mode, by controlling the second throttling device 220, the second heat exchange unit 122 can be used for dehumidification, and the first heat exchange unit 121 can be used to heat the dehumidified air. In the cooling dehumidification mode, by controlling the second throttling device 220 to be fully open, the first heat exchange unit 121 and the second heat exchange unit 122 can be used simultaneously for dehumidification.
[0061] Optionally, the first heat exchange unit 121 and the second heat exchange unit 122 are arranged side by side. Furthermore, along the airflow direction, the first heat exchange unit 121 is located on the leeward side of the second heat exchange unit 122.
[0062] In this embodiment, arranging two heat exchange units side-by-side allows for more compact space utilization, reducing the size and footprint of the indoor air conditioning unit. This is particularly important for space-constrained indoor environments, saving users more space. Furthermore, by placing the first heat exchange unit 121 on the leeward side of the second heat exchange unit 122, the airflow direction is opposite to the refrigerant flow direction in either the heating / dehumidification mode or the constant-temperature dehumidification mode. This ensures that when the second heat exchange unit 122 performs dehumidification, it can effectively heat the dehumidified air.
[0063] In some embodiments, the air conditioner further includes a fan assembly. The fan assembly is disposed on one side of the indoor heat exchanger 120, and the airflow direction of the fan assembly is from the second heat exchange unit 122 to the first heat exchange unit 121.
[0064] In this embodiment, the fan assembly serves as the power source for airflow. The airflow it blows first targets the second heat exchange unit 122, accelerating the heat exchange process between the air and the heat exchange surface. Subsequently, the air that has undergone preliminary heat exchange continues to be blown towards the first heat exchange unit 121 for further heat exchange. As mentioned earlier, in the heating and dehumidification mode or the constant temperature dehumidification mode, the temperature of the second heat exchange unit 122 is lower, while the temperature of the first heat exchange unit 121 is higher. First, the air with higher humidity is blown towards the second heat exchange unit 122 for dehumidification. Then, the dehumidified air is blown towards the first heat exchange unit 121. Since the airflow direction is opposite to the refrigerant flow direction, the first heat exchange unit 121 can effectively heat the dehumidified air.
[0065] Optionally, the first throttling device 210 includes a first electronic expansion valve.
[0066] In this embodiment, the first electronic expansion valve is closed in heating and dehumidification mode, throttles in constant temperature and dehumidification mode, and throttles in cooling and dehumidification mode. Because the first electronic expansion valve has high precision and fast response, it can adjust the refrigerant flow in a timely manner according to different operating modes of the air conditioner.
[0067] Optionally, the second throttling device 220 includes a second electronic expansion valve.
[0068] In this embodiment, the second electronic expansion valve throttles the refrigerant flow in heating and dehumidification mode, throttles it in constant temperature and dehumidification mode, and is fully open in cooling and dehumidification mode. Because the second electronic expansion valve has high precision and fast response, it can adjust the refrigerant flow in a timely manner according to different operating modes of the air conditioner.
[0069] Optionally, the third throttling device 230 includes a third electronic expansion valve.
[0070] In this embodiment, the third electronic expansion valve is fully open in heating and dehumidification mode, throttled in constant temperature and dehumidification mode, and closed in cooling and dehumidification mode. Because the third electronic expansion valve has high precision and fast response, it can adjust the refrigerant flow in a timely manner according to different operating modes of the air conditioner.
[0071] The foregoing description and accompanying drawings fully illustrate 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. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. 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 its scope. The scope of the present disclosure is limited only by the appended claims.
Claims
1. An air conditioner, characterized in that, include: The refrigerant circulation loop is composed of a compressor (100), a four-way valve (200), an outdoor heat exchanger (110), a first throttling device (210), and an indoor heat exchanger (120) connected in series; wherein, the indoor heat exchanger (120) includes a first heat exchange unit (121) and a second heat exchange unit (122), and the first heat exchange unit (121) is connected in series with the second heat exchange unit (122) through the second throttling device (220); The bypass branch (130) has its first end connected between the outdoor heat exchanger (110) and the four-way valve (200), and its second end connected between the first throttling device (210) and the first heat exchange unit (121); and the bypass branch (130) is provided with a third throttling device (230).
2. The air conditioner according to claim 1, characterized in that, The air conditioner has a heating and dehumidification mode, which corresponds to the compressor (100) being connected to the outdoor heat exchanger (110) through a four-way valve (200), and the first throttling device (210) being closed, the second throttling device (220) being throttled, and the third throttling device (230) being fully open.
3. The air conditioner according to claim 1, characterized in that, The air conditioner has a constant temperature dehumidification mode, which corresponds to the compressor (100) being connected to the outdoor heat exchanger (110) through a four-way valve (200), and the first throttling device (210) throttling, the second throttling device (220) throttling, and the third throttling device (230) throttling.
4. The air conditioner according to claim 1, characterized in that, The air conditioner has a cooling and dehumidification mode. The constant temperature and dehumidification mode corresponds to the compressor (100) being connected to the outdoor heat exchanger (110) through a four-way valve (200). The first throttling device (210) is throttling, the second throttling device (220) is fully open, and the third throttling device (230) is closed.
5. The air conditioner according to any one of claims 1 to 4, characterized in that, With the compressor (100) connected to the outdoor heat exchanger (110) via a four-way valve (200), the second heat exchange unit (122) is located downstream of the first heat exchange unit (121) along the refrigerant circulation loop.
6. The air conditioner according to claim 5, characterized in that, The first heat exchange unit (121) and the second heat exchange unit (122) are arranged side by side; Furthermore, along the airflow direction, the first heat exchange unit (121) is located on the leeward side of the second heat exchange unit (122).
7. The air conditioner according to claim 6, characterized in that, Also includes: The fan assembly is located on one side of the indoor heat exchanger (120), and the airflow direction of the fan assembly is from the second heat exchange unit (122) to the first heat exchange unit (121).
8. The air conditioner according to any one of claims 1 to 4, characterized in that, The first throttling device (210) includes a first electronic expansion valve.
9. The air conditioner according to any one of claims 1 to 4, characterized in that, The second throttling device (220) includes a second electronic expansion valve.
10. The air conditioner according to any one of claims 1 to 4, characterized in that, The third throttling device (230) includes a third electronic expansion valve.