Method and device for controlling variable dehumidification air conditioner and air conditioner

Abstract

The invention relates to the technical field of air conditioners, and discloses a method for controlling a variable dehumidification air conditioner which comprises an outdoor heat exchanger, an online throttling element and an indoor variable dehumidification heat exchanger. The indoor variable dehumidification heat exchanger comprises a first heat exchange module, a second heat exchange module, a third heat exchange module, a first bypass pipeline and a second bypass pipeline. The method for controlling the variable dehumidification air conditioner comprises the steps that the communication state of the first three-position four-way valve and the second three-position four-way valve is adjusted according to the difference value of the indoor temperature of a user and the set temperature and the indoor environment humidity, and the conduction state of the first throttling element and the second throttling element is adjusted. The invention further provides a device for controlling the variable dehumidification air conditioner and the air conditioner.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, and for example to a method, apparatus and air conditioner for controlling a variable dehumidification air conditioner. Background Technology

[0002] Users can utilize the dehumidification function of air conditioners to reduce indoor humidity. Traditional air conditioners dehumidify by reducing the indoor fan speed or controlling the compressor frequency while operating in cooling mode. However, this method always results in a drop in indoor temperature, negatively impacting the user experience.

[0003] To maintain indoor temperature during dehumidification, existing constant-temperature dehumidification methods primarily involve dividing the indoor heat exchanger into multiple heat exchange modules, with dehumidification valves connecting these modules in series. This achieves dehumidification without lowering the temperature.

[0004] In the process of implementing the embodiments of this disclosure, at least the following problems were found in the related art:

[0005] In existing constant temperature dehumidification methods, the installation of dehumidification valves has reset the series and parallel connections between different heat exchange modules of the heat exchanger, resulting in a decrease in the heat exchange efficiency of the heat exchanger during normal cooling or heating modes of the air conditioner, thus affecting the energy efficiency of the air conditioner.

[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. Summary of the Invention

[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 a method, apparatus, and air conditioner for controlling a variable dehumidification heat exchanger, to solve the problem that existing heat exchangers equipped with dehumidification valves experience reduced heat exchange efficiency during normal cooling or heating modes, thus affecting the energy efficiency of the air conditioner.

[0009] In some embodiments, a method for controlling a variable dehumidification air conditioner is provided. The variable dehumidification air conditioner includes an outdoor heat exchanger, an online throttling element, and an indoor variable dehumidification heat exchanger. The indoor variable dehumidification heat exchanger includes a first heat exchange module, a second heat exchange module, a third heat exchange module, a first bypass pipe, and a second bypass pipe. The first heat exchange module includes a first inlet / outlet end and a second inlet / outlet end. The second heat exchange module includes a third inlet / outlet end and a fourth inlet / outlet end. The third heat exchange module includes a fifth inlet / outlet end and a sixth inlet / outlet end. The first bypass pipe is connected to the third inlet / outlet end and the second inlet / outlet end, and is provided with a first throttling element. The second bypass pipe is connected to the fifth inlet / outlet end and the fourth inlet / outlet end, and is provided with a second throttling element. The third inlet / outlet end and the fifth inlet / outlet end are connected to a first three-position four-way valve, and the second inlet / outlet end and the fourth inlet / outlet end are connected to a second three-position four-way valve.

[0010] A method for controlling a variable dehumidification air conditioner includes: adjusting the connection state of a first three-position four-way valve and a second three-position four-way valve based on the difference between the user's indoor temperature and the set temperature and the indoor ambient humidity, and adjusting the conduction state of a first throttling element and a second throttling element.

[0011] In some alternative embodiments, the first three-position four-way valve includes a first neutral position, a first end position, and a second end position, and the third inlet / outlet end and the fifth inlet / outlet end of the second heat exchange module can be selectively connected to the first neutral position, the first end position, or the second end position of the first three-position four-way valve.

[0012] In some alternative embodiments, the second three-position four-way valve includes a second neutral position, a third end position, and a fourth end position, and the second inlet and outlet ends of the first heat exchange module and the fourth inlet and outlet ends of the second heat exchange module can be selectively connected to the second neutral position, the third end position, or the fourth end position of the second three-position four-way valve.

[0013] In some optional embodiments, when the air conditioner is running in heating mode, the difference between the user's indoor temperature and the set temperature is obtained, and the indoor humidity is also obtained. When the difference between the user's indoor temperature and the set temperature is less than or equal to a first temperature threshold and the indoor humidity is greater than or equal to a first humidity threshold, the third inlet and outlet terminals and the fifth inlet and outlet terminals are connected to the second terminal of the first three-position four-way valve, and the second inlet and outlet terminals and the fourth inlet and outlet terminals are connected to the fourth terminal of the second three-position four-way valve. The first throttling element is disconnected, and the second throttling element is throttled and turned on, so that the air conditioner enters the heating constant temperature dehumidification mode.

[0014] In some optional embodiments, after the air conditioner enters the heating, constant temperature and dehumidification mode, it continues to acquire the difference between the user's indoor temperature and the set temperature, and at the same time acquires the indoor humidity. When the difference between the user's indoor temperature and the set temperature is less than or equal to the second temperature threshold, and the indoor humidity is less than or equal to the second humidity threshold, the opening of the second throttling element is increased.

[0015] In some alternative embodiments, the first temperature threshold is less than or equal to -0.5°C; and / or, the first humidity threshold is greater than or equal to 70%; and / or, the second temperature threshold is less than or equal to 0.5°C; and / or, the second humidity threshold is less than 50%.

[0016] In some optional embodiments, when the air conditioner is running in cooling and dehumidification mode, the difference between the user's indoor temperature and the set temperature is obtained. When the difference between the user's indoor temperature and the set temperature is less than or equal to a third temperature threshold, the second inlet and outlet terminals and the fourth inlet and outlet terminals are connected to the third position of the second three-position four-way valve, and the third inlet and outlet terminals and the fifth inlet and outlet terminals are connected to the first position of the first three-position four-way valve. The second throttling element is disconnected, the first throttling element is throttled and turned on, and the opening degree of the online throttling element is adjusted to the first opening degree, so that the air conditioner enters the cooling constant temperature dehumidification mode.

[0017] In some optional embodiments, after the air conditioner enters the cooling constant temperature dehumidification mode, it continues to obtain the difference between the user's indoor temperature and the set temperature. When the difference between the user's indoor temperature and the set temperature is greater than or equal to the fourth temperature threshold, the opening degree of the online throttling element is reduced.

[0018] In some alternative embodiments, the third temperature threshold is less than or equal to -0.5°C; and / or, the fourth temperature threshold is greater than 0.5°C.

[0019] In some embodiments, an apparatus for controlling a variable dehumidification air conditioner includes a processor and a memory storing program instructions, characterized in that the processor is configured to execute, when running the program instructions, the method for controlling the variable dehumidification air conditioner as described above.

[0020] In some embodiments, an air conditioner includes: an air conditioner body; and a device for controlling a variable dehumidification air conditioner as described above, installed on the air conditioner body.

[0021] The present disclosure provides a method, apparatus, and air conditioner for controlling a variable dehumidification air conditioner, which can achieve the following technical effects:

[0022] The variable dehumidification air conditioner includes an outdoor heat exchanger, an inline throttling element, and an indoor variable dehumidification heat exchanger. The indoor variable dehumidification heat exchanger includes a first heat exchange module, a second heat exchange module, a third heat exchange module, a first bypass pipe, and a second bypass pipe. The first heat exchange module includes a first inlet / outlet end and a second inlet / outlet end; the second heat exchange module includes a third inlet / outlet end and a fourth inlet / outlet end; and the third heat exchange module includes a fifth inlet / outlet end and a sixth inlet / outlet end. The first bypass pipe connects the third inlet / outlet end and the second inlet / outlet end, and is equipped with a first throttling element. The second bypass pipe connects the fifth inlet / outlet end and the fourth inlet / outlet end, and is equipped with a second throttling element. The third inlet / outlet end and the fifth inlet / outlet end are connected to a first three-position four-way valve, and the second inlet / outlet end and the fourth inlet / outlet end are connected to a second three-position four-way valve.

[0023] A method for controlling a variable dehumidification air conditioner includes: adjusting the connection state of a first three-position four-way valve and a second three-position four-way valve based on the difference between the user's indoor temperature and the set temperature and the indoor ambient humidity, and adjusting the conduction state of a first throttling element and a second throttling element.

[0024] The method for controlling a variable dehumidifier provided in this disclosure can adjust the connection state of the first three-position four-way valve and the second three-position four-way valve according to the operating state of the air conditioner, the difference between the user's indoor temperature and the set temperature, and the indoor humidity, and adjust the conduction state of the first throttling element and the second throttling element, thereby improving the dehumidification effect while meeting the user's temperature requirements.

[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 an existing air conditioner;

[0028] Figure 2 This is a schematic diagram of another existing air conditioner;

[0029] Figure 3 This is a schematic diagram of the structure of a variable dehumidification heat exchanger provided in an embodiment of this disclosure;

[0030] Figure 4 This is a schematic diagram of another variable dehumidification heat exchanger provided in an embodiment of this disclosure;

[0031] Figure 5 This is a schematic diagram of another variable dehumidification heat exchanger provided in an embodiment of this disclosure;

[0032] Figure 6 This is a schematic diagram of the structure of a first three-position four-way valve provided in an embodiment of this disclosure;

[0033] Figure 7 This is a schematic diagram of an air conditioner provided in an embodiment of this disclosure;

[0034] Figure 8 This is a schematic diagram of another air conditioner provided in an embodiment of this disclosure;

[0035] Figure 9 This is a schematic diagram of another air conditioner provided in an embodiment of this disclosure;

[0036] Figure 10 This is a schematic diagram of another air conditioner provided in an embodiment of this disclosure;

[0037] Figure 11 This is a schematic flowchart of a method for controlling a variable dehumidifier provided in an embodiment of this disclosure;

[0038] Figure 12 This is a schematic diagram of a device for controlling a variable dehumidification air conditioner provided in an embodiment of this disclosure;

[0039] Figure 13 This is a schematic diagram of the structure of an indoor air conditioning unit provided in an embodiment of this disclosure.

[0040] Figure label:

[0041] 10: Indoor heat exchanger;

[0042] 1: First heat exchange module; 11: First inlet / outlet end; 12: Second inlet / outlet end;

[0043] 2: Second heat exchange module; 21: Third inlet / outlet end; 22: Fourth inlet / outlet end;

[0044] 3: Third heat exchange module; 31: Fifth inlet / outlet end; 32: Sixth inlet / outlet end;

[0045] 41: First bypass line; 411: First throttling element; 412: First bypass end; 413: Second bypass end; 42: Second bypass line; 421: Second throttling element; 422: Third bypass end; 423: Fourth bypass end;

[0046] 51: First three-position four-way valve; 511: First neutral position; 512: First end position; 5121: First disconnect line; 5122: First open line; 513: Second end position; 52: Second three-position four-way valve; 521: Second neutral position; 522: Third end position; 523: Fourth end position; 5131: Second open line; 5132: Second disconnect line;

[0047] 6: Compressor;

[0048] 7: Outdoor heat exchanger;

[0049] 8: Online throttling element. Detailed Implementation

[0050] 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.

[0051] 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 the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0052] 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.

[0053] 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.

[0054] Unless otherwise stated, the term "multiple" means two or more.

[0055] 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.

[0056] 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.

[0057] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0058] This disclosure provides a method for controlling a variable dehumidification air conditioner.

[0059] The variable dehumidification air conditioner includes an outdoor heat exchanger 7, an inline throttling element 8, and an indoor variable dehumidification heat exchanger. The indoor variable dehumidification heat exchanger includes a first heat exchange module 1, a second heat exchange module 2, a third heat exchange module 3, a first bypass pipe 41, and a second bypass pipe 42. The first heat exchange module 1 includes a first inlet / outlet end 11 and a second inlet / outlet end 12. The second heat exchange module 2 includes a third inlet / outlet end 21 and a fourth inlet / outlet end 22. The third heat exchange module 3 includes a fifth inlet / outlet end 31 and a sixth inlet / outlet end 32. The first bypass pipe 41 connects the third inlet / outlet end 21 and the second inlet / outlet end 12, and is equipped with a first throttling element 411. The second bypass pipe 42 connects the fifth inlet / outlet end 31 and the fourth inlet / outlet end 22, and is equipped with a second throttling element 421. The third inlet / outlet end 21 and the fifth inlet / outlet end 31 are connected to a first three-position four-way valve 51, and the second inlet / outlet end 12 and the fourth inlet / outlet end 22 are connected to a second three-position four-way valve 52.

[0060] It is understandable that an indoor variable dehumidification heat exchanger can also be called a variable dehumidification heat exchanger.

[0061] The first throttling element 411 provided in the first bypass pipe 41 and the second throttling element 421 provided in the second bypass pipe 42 can be used as dehumidification valves. When the air conditioner needs to dehumidify, the refrigerant can flow through the first throttling element 411 or the second throttling element 421 to reduce the temperature of the refrigerant.

[0062] As mentioned earlier, existing methods achieve constant temperature dehumidification in air conditioners by installing a dehumidification valve in the indoor heat exchanger 10. This method involves dividing the indoor heat exchanger 10 into two or more heat exchange modules, placing the dehumidification valve between these modules, and connecting the two or more modules in series. This prevents the air conditioner from lowering the indoor temperature during dehumidification. Due to the dehumidification valve, the indoor heat exchanger 10 can maintain a constant temperature even during normal dehumidification processes. Figure 2 The cooling mode shown or as Figure 1 When the heating mode is shown, the refrigerant also needs to flow through the dehumidification valve, which reduces the heat exchange efficiency of the indoor heat exchanger 10, affects the energy efficiency of the air conditioner, and impacts the user's normal cooling or heating experience.

[0063] In the indoor variable dehumidification heat exchanger provided in this embodiment, the first three-position four-way valve 51 includes a first middle position 511, a first end position 512, and a second end position 513.

[0064] like Figure 6 As shown, the first neutral position 511 of the first three-position four-way valve 51 includes two conducting lines, the first end position 512 includes a first conducting line 5122 and a first disconnecting line 5121, and the second end position 513 includes a second conducting line 5131 and a second disconnecting line 5132. When both inlet and outlet ends are connected to the first neutral position 511, both inlet and outlet ends are conducting, as shown. Figure 7 and Figure 8 As shown; the first end position 512 is the left end position, and the pipe located at the left end of the first end position 512 is the first disconnect pipe 5121, and the pipe located at the right end is the first conduction pipe 5122. When the two inlet and outlet ends are connected to the first end position 512, the inlet and outlet ends connected to the first disconnect pipe 5121 are disconnected, and the inlet and outlet ends connected to the first conduction pipe 5122 are connected, as shown. Figure 10 As shown; the second end 513 is the right end, and the pipe at the right end of the second end 513 is the second disconnect pipe 5132, and the pipe at the left end is the second conduction pipe 5131. When the two inlet and outlet ends are connected to the second end 513, the inlet and outlet ends connected to the second disconnect pipe 5132 are disconnected, and the inlet and outlet ends connected to the second conduction pipe 5131 are connected, as shown. Figure 9 As shown.

[0065] Optionally, the third inlet / outlet end 21 of the second heat exchange module 2 and the fifth inlet / outlet end 31 of the third heat exchange module 3 may be selectively connected to the first neutral position 511, the first end position 512 or the second end position 513 of the first three-position four-way valve 51.

[0066] The first three-position four-way valve 51 can adjust the connection between its connected third inlet / outlet end 21 and fifth inlet / outlet end 31 by switching its state. For example, both the third inlet / outlet end 21 and the fifth inlet / outlet end 31 can be connected to the first neutral position 511. In this case, both the third inlet / outlet end 21 and the fifth inlet / outlet end 31 are conductive. Figure 7 and Figure 8 As shown; the third inlet / outlet end 21 and the fifth inlet / outlet end 31 can be connected to the first end position 512, and the third inlet / outlet end 21 is connected to the first disconnected conduit 5121, and the fifth inlet / outlet end 31 is connected to the first connected conduit 5122. At this time, the third inlet / outlet end 21 is disconnected, and the fifth inlet / outlet end 31 is connected, as shown. Figure 10 As shown; the third inlet / outlet end 21 and the fifth inlet / outlet end 31 can be connected to the second end position 513, and the third inlet / outlet end 21 is connected to the second conductive pipe 5131, and the fifth inlet / outlet end 31 is connected to the second disconnected pipe 5132. At this time, the third inlet / outlet end 21 is conductive, and the fifth inlet / outlet end 31 is disconnected, as shown. Figure 9 As shown.

[0067] The second three-position four-way valve 52 includes a second neutral position 521, a third end position 522, and a fourth end position 523.

[0068] The second neutral position 521 of the second three-position four-way valve 52 includes two conducting lines, the third position 522 includes a third conducting line and a fourth disconnecting line, and the fourth position 523 includes a fourth conducting line and a fourth disconnecting line. When both inlet and outlet ends are connected to the second neutral position 521, both inlet and outlet ends are conducting. The third position 522 is the left position, and the line at the left end of the third position 522 is the third disconnecting line, and the line at the right end is the third conducting line. When both inlet and outlet ends are connected to the third position 522, the inlet and outlet ends connected to the third disconnecting line are disconnected, and the inlet and outlet ends connected to the third conducting line are conducting. The fourth position 523 is the right position, and the line at the right end of the fourth position 523 is the fourth disconnecting line, and the line at the left end is the fourth conducting line. When both inlet and outlet ends are connected to the fourth position 523, the inlet and outlet ends connected to the fourth disconnecting line are disconnected, and the inlet and outlet ends connected to the fourth conducting line are conducting.

[0069] Optionally, the second inlet / outlet end 12 of the first heat exchange module 1 and the fourth inlet / outlet end 22 of the second heat exchange module 2 may be selectively connected to the second middle position 521, the third position 522 or the fourth position 523 of the second three-position four-way valve 52.

[0070] The second three-position four-way valve 52 can adjust the connection between its second inlet / outlet terminal 12 and fourth inlet / outlet terminal 22 by switching states. For example, both the second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 can be connected to the second neutral position 521. In this case, both the second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are conductive. Figure 7 and Figure 8 As shown; the second inlet / outlet end 12 and the fourth inlet / outlet end 22 can be connected to the third end 522, and the second inlet / outlet end 12 is connected to the third disconnected pipeline, and the fourth inlet / outlet end 22 is connected to the third connected pipeline. At this time, the second inlet / outlet end 12 is disconnected, and the fourth inlet / outlet end 22 is connected, as shown. Figure 10 As shown; the second inlet / outlet end 12 and the fourth inlet / outlet end 22 can be connected to the fourth end position 523, and the second inlet / outlet end 12 is connected to the fourth conductive pipeline, and the fourth inlet / outlet end 22 is connected to the fourth disconnected pipeline. At this time, the second inlet / outlet end 12 is conductive, and the fourth inlet / outlet end 22 is disconnected, as shown. Figure 9 As shown.

[0071] Optionally, the first bypass line 41 includes a first bypass end 412 and a second bypass end 413, wherein the first bypass end 412 is connected to the connecting line between the third inlet / outlet end 21 and the first three-position four-way valve 51, and the second bypass end 413 is connected to the connecting line between the second inlet / outlet end 12 and the second three-position four-way valve 52.

[0072] Optionally, the first bypass end 412 is provided with a first diversion element, which can be a distributor including one main pipe and three branch pipes; the second bypass end 413 is provided with a second diversion element, which can be a Y-type or T-type distributor. Figure 5 As shown.

[0073] Optionally, the second bypass line 42 includes a third bypass end 422 and a fourth bypass end 423, wherein the third bypass end 422 is connected to the connecting line between the fifth inlet / outlet end 31 and the first three-position four-way valve 51, and the fourth bypass end 423 is connected to the connecting line between the fourth inlet / outlet end 22 and the second three-position four-way valve 52.

[0074] Similarly, the third bypass end 422 is provided with a third diversion element, which can be a Y-type or T-type distributor; the fourth bypass end 423 is provided with a fourth diversion element, which can be a distributor including one main pipe and three branch pipes. Figure 5 As shown.

[0075] When the air conditioner is running in cooling or heating mode, the third inlet / outlet terminal 21 and the fifth inlet / outlet terminal 31 are connected to the first neutral position 511 of the first three-position four-way valve 51, the second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are connected to the second neutral position 521 of the second three-position four-way valve 52, and the first throttling element 411 and the second throttling element 421 are disconnected, so that the first heat exchange module 1, the second heat exchange module 2 and the third heat exchange module 3 are connected in parallel.

[0076] When the air conditioner is operating in normal cooling or heating mode, the third inlet / outlet terminal 21 and the fifth inlet / outlet terminal 31 are connected to the first neutral position 511 of the first three-position four-way valve 51. At this time, both the third inlet / outlet terminal 21 and the fifth inlet / outlet terminal 31 are conductive. The second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are connected to the second neutral position 521 of the second three-position four-way valve 52. At this time, both the second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are conductive. Simultaneously, the first throttling element 411 and the second throttling element 421 are disconnected, and they do not perform throttling. At this time, the first heat exchange module 1, the second heat exchange module 2, and the third heat exchange module 3 are connected in parallel, and the air conditioner can operate normally in heating or cooling mode. Figure 7 and Figure 8 As shown.

[0077] When the air conditioner is running in heating, constant temperature and dehumidification mode, the third inlet / outlet end 21 and the fifth inlet / outlet end 31 are connected to the second end 513 of the first three-position four-way valve 51, the second inlet / outlet end 12 and the fourth inlet / outlet end 22 are connected to the fourth end 523 of the second three-position four-way valve 52, and the first throttling element 411 is disconnected, the second throttling element 421 is throttled and connected, and the opening degree of the online throttling element 8 is greater than the first opening threshold, so that the refrigerant flows into the first heat exchange module 1 and the second heat exchange module 2 connected in parallel, and after being throttled by the second throttling element 421, it flows through the third heat exchange module 3 for dehumidification.

[0078] When the air conditioner operates in heating, constant temperature, and dehumidification mode, the third inlet / outlet terminal 21 and the fifth inlet / outlet terminal 31 are connected to the second position 513 of the first three-position four-way valve 51. At this time, the third inlet / outlet terminal 21 is open, and the fifth inlet / outlet terminal 31 is closed. The second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are connected to the fourth position 523 of the second three-position four-way valve 52. At this time, the second inlet / outlet terminal 12 is open, and the fourth inlet / outlet terminal 22 is closed. The second throttling element 421 is opened, and the opening degree of the connected throttling element 8 is adjusted to be greater than the first opening threshold. This increases the temperature of the refrigerant flowing into the first heat exchange module 1 and the second heat exchange module 2. After the high-temperature refrigerant flows into the parallel-connected first heat exchange module 1 and the second heat exchange module 2, it is throttled by the second throttling element 421 and flows through the third heat exchange module 3 for dehumidification. This mode can handle heating, constant temperature, and dehumidification under low temperature and high humidity conditions such as the "return to spring" weather. Optionally, the opening degree of the connected throttling element 8 is the maximum opening degree. Figure 9 As shown.

[0079] When the air conditioner operates in the cooling secondary throttling constant temperature dehumidification mode, the second inlet / outlet end 12 and the fourth inlet / outlet end 22 are connected to the third end 522 of the second three-position four-way valve 52, and the third inlet / outlet end 21 and the fifth inlet / outlet end 31 are connected to the first end 512 of the first three-position four-way valve 51. The second throttling element 421 is disconnected, and the first throttling element 411 is throttled and opened, so that the refrigerant flows into the second heat exchange module 2 and the third heat exchange module 3 connected in parallel, and then flows into the first heat exchange module 1 for dehumidification after being throttled by the first throttling element 411.

[0080] When the air conditioner operates in the cooling secondary throttling constant temperature and dehumidification mode, the second inlet / outlet terminal 12 and the fourth inlet / outlet terminal 22 are connected to the third position 522 of the second three-position four-way valve 52. At this time, the second inlet / outlet terminal 12 is disconnected, and the fourth inlet / outlet terminal 22 is connected. The third inlet / outlet terminal 21 and the fifth inlet / outlet terminal 31 are connected to the first position 512 of the first three-position four-way valve 51. At this time, the third inlet / outlet terminal 21 is disconnected, and the fifth inlet / outlet terminal 31 is connected. After the refrigerant undergoes primary throttling by the online throttling element 8, it flows into the parallel-connected second heat exchange module 2 and third heat exchange module 3, and then, after secondary throttling by the first throttling element 411, flows into the first heat exchange module 1 for dehumidification. This mode can handle cooling constant temperature and dehumidification under high temperature and high humidity conditions in summer. Figure 10 As shown.

[0081] Optionally, the method for controlling a variable dehumidification air conditioner includes:

[0082] S01, based on the difference between the user's indoor temperature and the set temperature and the indoor ambient humidity, adjust the connection state of the first three-position four-way valve and the second three-position four-way valve, and adjust the conduction state of the first throttling element and the second throttling element.

[0083] In the method for controlling a variable dehumidifier provided in this embodiment, when the indoor humidity of the user's room is high and dehumidification is required, the connection state of the first three-position four-way valve with the third inlet and outlet terminals and the fifth inlet and outlet terminals is adjusted according to the difference between the user's indoor temperature T0 and the set temperature T1, and the user's indoor humidity. At the same time, the connection state of the second three-position four-way valve with the second inlet and outlet terminals and the fourth inlet and outlet terminals is adjusted. Simultaneously, the conduction state of the first throttling element and the second throttling element is adjusted to improve the dehumidification effect of the variable dehumidifier.

[0084] Optionally, when the air conditioner is running in heating mode, the difference between the user's indoor temperature and the set temperature is obtained, and the indoor humidity is also obtained. When the difference between the user's indoor temperature and the set temperature is less than or equal to a first temperature threshold, and the indoor humidity is greater than or equal to a first humidity threshold, the third and fifth inlet / outlet terminals are connected to the second terminal of the first three-position four-way valve, and the second and fourth inlet / outlet terminals are connected to the fourth terminal of the second three-position four-way valve. The first throttling element is disconnected, and the second throttling element is throttled and turned on, so that the air conditioner enters the heating, constant temperature and dehumidification mode.

[0085] This mode can handle heating, temperature control, and dehumidification under low-temperature, high-humidity conditions such as the "return of spring" weather. When the system detects that the user is running the heating mode, it monitors the user's indoor temperature T0 and the set temperature T1 in real time and obtains the difference between them. Simultaneously, it acquires the indoor humidity. If the difference between the user's indoor temperature T0 and the set temperature T1 is less than or equal to a first temperature threshold, and the indoor humidity is greater than or equal to a first humidity threshold, and this condition lasts for more than or equal to 3 minutes, the system considers the current indoor humidity to be too high and dehumidification is required. The system then controls the air conditioner to enter the heating, temperature control, and dehumidification mode.

[0086] When the air conditioner operates in heating, constant temperature, and dehumidification mode, the third and fifth inlet / outlet terminals are connected to the second position of the first three-position four-way valve, and the second and fourth inlet / outlet terminals are connected to the fourth position of the second three-position four-way valve. At this time, after the first and second heat exchange modules are connected in parallel, the refrigerant, after being throttled and cooled by the second throttling element, flows through the third heat exchange module for dehumidification. Optionally, the first temperature threshold is less than or equal to -0.5℃; and / or, the first humidity threshold is greater than or equal to 70%.

[0087] Optionally, after the air conditioner enters the heating, constant temperature and dehumidification mode, it continues to acquire the difference between the user's indoor temperature and the set temperature, and at the same time acquires the indoor humidity. When the difference between the user's indoor temperature and the set temperature is less than or equal to the second temperature threshold, and the indoor humidity is less than or equal to the second humidity threshold, the opening of the second throttling element is increased.

[0088] When the difference between the user's indoor temperature and the set temperature is less than or equal to the second temperature threshold, and the indoor humidity is less than or equal to the second humidity threshold, and the duration of this state is greater than or equal to 3 minutes, the indoor humidity is considered to have decreased. In this case, the opening of the second throttling element can be increased to reduce the evaporative dehumidification capacity of the indoor heat exchanger and increase the heating capacity. Optionally, the second throttling element can be increased by 10 steps. Optionally, the second temperature threshold is less than or equal to 0.5℃; and / or, the second humidity threshold is less than 50%.

[0089] When the difference between the user's indoor temperature and the set temperature is greater than or equal to 0.5℃, and the indoor humidity is less than 50%, and the duration of this state is greater than or equal to 3 minutes, the air conditioner can be controlled to exit the heating, constant temperature and dehumidification mode. In addition, both three-position four-way valves are adjusted to the middle position, and both throttling elements are closed, so that the air conditioner can operate in the normal heating mode.

[0090] Optionally, when the air conditioner is running in cooling and dehumidification mode, the difference between the user's indoor temperature and the set temperature is obtained. When the difference between the user's indoor temperature and the set temperature is less than or equal to the third temperature threshold, the second inlet and outlet terminals and the fourth inlet and outlet terminals are connected to the third position of the second three-position four-way valve, and the third inlet and outlet terminals and the fifth inlet and outlet terminals are connected to the first position of the first three-position four-way valve. The second throttling element is disconnected, the first throttling element is throttled and turned on, and the opening degree of the online throttling element is adjusted to the first opening degree, so that the air conditioner enters the cooling constant temperature dehumidification mode.

[0091] When the difference between the user's indoor temperature and the set temperature is less than or equal to the third temperature threshold, and the indoor humidity is greater than or equal to 70%, and the duration of this condition is greater than or equal to 3 minutes, when the air conditioner is running in cooling / dehumidification mode, the second and fourth inlet / outlet terminals are connected to the third position of the second three-position four-way valve, and the third and fifth inlet / outlet terminals are connected to the first position of the first three-position four-way valve. The first throttling element is also controlled to throttle and conduct, and the opening degree of the online throttling element is adjusted to the first opening degree. Optionally, the third temperature threshold is less than or equal to -0.5℃.

[0092] Optionally, after the air conditioner enters the cooling constant temperature dehumidification mode, it continues to acquire the difference between the user's indoor temperature and the set temperature. When the difference between the user's indoor temperature and the set temperature is greater than or equal to the fourth temperature threshold and lasts for more than or equal to 3 minutes, the opening degree of the online throttling element is reduced. Optionally, the fourth temperature threshold is greater than 0.5℃. Optionally, the opening degree of the 10-step online throttling element is reduced. At this time, the evaporation pressure is reduced to lower the evaporation temperature, thereby lowering the outlet air temperature of the indoor unit and improving the dehumidification capacity.

[0093] This disclosure also provides an apparatus for controlling a variable dehumidification air conditioner, including a processor and a memory storing program instructions, characterized in that the processor is configured to execute the aforementioned method for controlling the variable dehumidification air conditioner when running the program instructions.

[0094] Combination Figure 12 As shown, this disclosure provides an apparatus 90 for controlling a variable dehumidification air conditioner, including a processor 900 and a memory 901. Optionally, the apparatus 90 may further include a communication interface 902 and a bus 903. The processor 900, communication interface 902, and memory 901 can communicate with each other via the bus 903. The communication interface 902 can be used for information transmission. The processor 900 can call logical instructions in the memory 901 to execute the method for controlling the variable dehumidification air conditioner described in the above embodiment.

[0095] Furthermore, the logic instructions in the aforementioned memory 901 can be implemented as software functional units and, when sold or used as independent products, can be stored in a computer-readable storage medium.

[0096] The memory 901, as a computer-readable storage medium, can be used to store software programs and computer-executable programs, such as program instructions / modules corresponding to the methods in the embodiments of this disclosure. The processor 900 executes functional applications and data processing by running the program instructions / modules stored in the memory 901, that is, it implements the method for controlling the variable dehumidification air conditioner in the above embodiments.

[0097] The memory 901 may include a program storage area and a data storage area. The program storage area may store the operating system and application programs required for at least one function; the data storage area may store data created based on the use of the terminal device. Furthermore, the memory 901 may include high-speed random access memory and may also include non-volatile memory.

[0098] This disclosure also provides an air conditioner, including: an air conditioner body; and a device for controlling a variable dehumidification air conditioner as described above, installed on the air conditioner body.

[0099] Combination Figure 13As shown, this disclosure provides an air conditioner 100, including: an air conditioner body and the aforementioned device 90 for controlling a variable dehumidification air conditioner. The device 90 for controlling the variable dehumidification air conditioner is installed in the air conditioner body. The installation relationship described herein is not limited to placement inside the air conditioner body, but also includes installation and connection with other components of the air conditioner 100, including but not limited to physical connections, electrical connections, or signal transmission connections. Those skilled in the art will understand that the device 90 for controlling the variable dehumidification air conditioner can be adapted to feasible air conditioner bodies to achieve other feasible embodiments.

[0100] The foregoing description and accompanying drawings fully illustrate embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural, logical, electrical, procedural, 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 in or replace parts and features of other embodiments. Moreover, the terminology used in this application is for describing embodiments only and is not intended to limit the claims. As used in the description of embodiments and claims, the singular forms “a,” “an,” and “the” are intended to equally include the plural forms unless the context clearly indicates otherwise. Similarly, the term “and / or” as used in this application means including one or more of the associated listed items and all possible combinations thereof. Additionally, when used in this application, the term "comprise" and its variations "comprises" and / or "comprising" refer to the presence of stated features, integrals, steps, operations, elements, and / or components, but do not exclude the presence or addition of one or more other features, integrals, steps, operations, elements, components, and / or groups thereof. Without further limitations, an element defined by the phrase "comprises a..." does not exclude the presence of other identical elements in the process, method, or apparatus that includes said element. In this document, each embodiment may focus on the differences from other embodiments, and similar or identical parts between embodiments can be referred to mutually. For methods, products, etc., disclosed in the embodiments, if they correspond to the method section disclosed in the embodiments, the relevant parts can be referred to the description of the method section.

[0101] Those skilled in the art will recognize that the units and algorithm steps of the various examples described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are implemented in hardware or software depends on the specific application and design constraints of the technical solution. Those skilled in the art can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of the embodiments of this disclosure. Those skilled in the art will clearly understand that, for the sake of convenience and brevity, the specific working processes of the systems, devices, and units described above can be referred to the corresponding processes in the foregoing method embodiments, and will not be repeated here.

[0102] The methods and products (including but not limited to devices and equipment) disclosed in the embodiments herein can be implemented in other ways. For example, the device embodiments described above are merely illustrative. For instance, the division of units may be merely a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. In addition, the coupling or direct coupling or communication connection between the shown or discussed units may be through some interfaces, and the indirect coupling or communication connection between devices or units may be electrical, mechanical, or other forms. The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of the units may be selected to implement this embodiment according to actual needs. Furthermore, the functional units in the embodiments of this disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.

[0103] The flowcharts and block diagrams in the accompanying drawings illustrate the architecture, functionality, and operation of possible implementations of systems, methods, and computer program products according to embodiments of this disclosure. In this regard, each block in a flowchart or block diagram may represent a module, segment, or portion of code containing one or more executable instructions for implementing a specified logical function. In some alternative implementations, the functions marked in the blocks may occur in a different order than that shown in the drawings. For example, two consecutive blocks may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. In the descriptions corresponding to the flowcharts and block diagrams in the accompanying drawings, the operations or steps corresponding to different blocks may also occur in a different order than disclosed in the description, and sometimes there is no specific order between different operations or steps. For example, two consecutive operations or steps may actually be executed substantially in parallel, and they may sometimes be executed in reverse order, depending on the functions involved. Each block in a block diagram and / or flowchart, and combinations of blocks in a block diagram and / or flowchart, can be implemented using a dedicated hardware-based system that performs the specified function or action, or using a combination of dedicated hardware and computer instructions.

Claims

1. A method for controlling a variable dehumidification air conditioner, characterized in that, The variable dehumidification air conditioner includes an outdoor heat exchanger, an inline throttling element, and an indoor variable dehumidification heat exchanger. The indoor variable dehumidification heat exchanger includes a first heat exchange module, a second heat exchange module, a third heat exchange module, a first bypass pipe, and a second bypass pipe. The first heat exchange module includes a first inlet / outlet end and a second inlet / outlet end; the second heat exchange module includes a third inlet / outlet end and a fourth inlet / outlet end; and the third heat exchange module includes a fifth inlet / outlet end and a sixth inlet / outlet end. The first bypass pipe connects the third inlet / outlet end and the second inlet / outlet end, and is equipped with a first throttling element. The second bypass pipe connects the fifth inlet / outlet end and the fourth inlet / outlet end, and is equipped with a second throttling element. The third inlet / outlet end and the fifth inlet / outlet end are connected to a first three-position four-way valve, and the second inlet / outlet end and the fourth inlet / outlet end are connected to a second three-position four-way valve. Methods for controlling variable dehumidification air conditioners include: Based on the difference between the user's indoor temperature and the set temperature, and the indoor humidity, adjust the connection status of the first three-position four-way valve and the second three-position four-way valve, and adjust the conduction status of the first throttling element and the second throttling element.

2. The method for controlling a variable dehumidification air conditioner according to claim 1, characterized in that, The first three-position four-way valve includes a first neutral position, a first end position, and a second end position. The third inlet and outlet ends of the second heat exchange module and the fifth inlet and outlet ends of the third heat exchange module can be selectively connected to the first neutral position, the first end position, or the second end position of the first three-position four-way valve. The second three-position four-way valve includes a second neutral position, a third end position, and a fourth end position. The second inlet and outlet ends of the first heat exchange module and the fourth inlet and outlet ends of the second heat exchange module can be selectively connected to the second neutral position, the third end position, or the fourth end position of the second three-position four-way valve.

3. The method for controlling a variable dehumidification air conditioner according to claim 2, characterized in that, When the air conditioner is running in heating mode, it obtains the difference between the user's indoor temperature and the set temperature, and also obtains the indoor humidity. When the difference between the user's indoor temperature and the set temperature is less than or equal to the first temperature threshold, and the indoor humidity is greater than or equal to the first humidity threshold, the third and fifth inlet / outlet terminals are connected to the second position of the first three-position four-way valve, and the second and fourth inlet / outlet terminals are connected to the fourth position of the second three-position four-way valve. The first throttling element is disconnected, and the second throttling element is throttled and turned on, so that the air conditioner enters the heating, constant temperature and dehumidification mode.

4. The method for controlling a variable dehumidification air conditioner according to claim 3, characterized in that, Once the air conditioner enters the heating, constant temperature, and dehumidification mode, it continues to acquire the difference between the user's indoor temperature and the set temperature, as well as the indoor humidity. When the difference between the user's indoor temperature and the set temperature is less than or equal to the second temperature threshold, and the indoor humidity is less than or equal to the second humidity threshold, the opening of the second throttling element is increased.

5. The method for controlling a variable dehumidification air conditioner according to claim 4, characterized in that, The first temperature threshold is less than or equal to -0.5℃; and / or, The first humidity threshold is greater than or equal to 70%; and / or, The second temperature threshold is less than or equal to 0.5℃; and / or, The second humidity threshold is less than 50%.

6. The method for controlling a variable dehumidification air conditioner according to claim 2, characterized in that, When the air conditioner is running in cooling / dehumidification mode, it obtains the difference between the user's indoor temperature and the set temperature. When the difference between the user's indoor temperature and the set temperature is less than or equal to the third temperature threshold, the second and fourth inlet / outlet terminals are connected to the third position of the second three-position four-way valve, the third and fifth inlet / outlet terminals are connected to the first position of the first three-position four-way valve, and the second throttling element is disconnected, the first throttling element is throttled and turned on, and the opening degree of the online throttling element is adjusted to the first opening degree, so that the air conditioner enters the cooling constant temperature dehumidification mode.

7. The method for controlling a variable dehumidification air conditioner according to claim 6, characterized in that, Once the air conditioner enters the cooling, constant temperature, and dehumidification mode, it continues to acquire the difference between the user's indoor temperature and the set temperature. When the difference between the user's indoor temperature and the set temperature is greater than or equal to the fourth temperature threshold, the opening of the online throttling element is reduced.

8. The method for controlling a variable dehumidification air conditioner according to claim 7, characterized in that, The third temperature threshold is less than or equal to -0.5℃; and / or, The fourth temperature threshold is greater than 0.5℃.

9. An apparatus for controlling a variable dehumidification air conditioner, comprising a processor and a memory having stored therein program instructions, characterized in that, The processor is configured to, when executing the program instructions, perform the method for controlling a variable dehumidification air conditioner as described in any one of claims 1 to 8.

10. An air conditioner characterized by comprising: include: Air conditioner body; The device for controlling a variable dehumidification air conditioner as described in claim 9 is installed on the air conditioner body.

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