Air conditioner

Abstract

The embodiment of the utility model provides an air conditioner which comprises a compressor, a reversing valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger, at least one first bypass flow path and at least one second bypass flow path, the reversing valve is provided with a first valve port and a second valve port, and the outdoor heat exchanger is provided with a plurality of heat exchange sections. The multiple heat exchange sections are arranged between the first valve port and the throttling element in parallel, the indoor heat exchanger is connected with the second valve port and the throttling element, and the first bypass flow path is connected with the ends, connected with the first valve port, of the heat exchange sections and the ends, connected with the throttling element, of the indoor heat exchanger. The second bypass flow path is connected with the end, connected with the throttling element, of the heat exchange section and the end, connected with the second valve port, of the indoor heat exchanger. The first bypass flow paths and the second bypass flow paths are arranged in a one-to-one correspondence mode, first switch control valves are arranged on the first bypass flow paths, and second switch control valves are arranged on the second bypass flow paths.

Description

Technical Field

[0001] This application relates to the field of air conditioning technology, specifically to an air conditioner. Background Technology

[0002] In related technologies, air conditioners with only a single outdoor heat exchanger typically cannot achieve non-stop defrosting. During defrosting, such air conditioners require the compressor to be stopped first, resulting in a failure to simultaneously heat during defrosting, leading to poor user comfort and an inability to adequately meet users' heating needs. Utility Model Content

[0003] This application provides an air conditioner that can perform non-stop defrosting with a single outdoor heat exchanger, thereby improving the comfort of using the air conditioner.

[0004] The air conditioner provided in this application includes a compressor, a reversing valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger, at least one first bypass flow path, and at least one second bypass flow path. The reversing valve has a first valve port and a second valve port. The outdoor heat exchanger has multiple heat exchange sections, which are arranged in parallel between the first valve port and the throttling element. The indoor heat exchanger is connected to the second valve port and the throttling element. The first bypass flow path connects one end of the heat exchange section connected to the first valve port and one end of the indoor heat exchanger connected to the throttling element. The second bypass flow path connects one end of the heat exchange section connected to the throttling element and one end of the indoor heat exchanger connected to the second valve port. The first bypass flow path and the second bypass flow path are arranged in a one-to-one correspondence. A first switch control valve is provided on the first bypass flow path, and a second switch control valve is provided on the second bypass flow path.

[0005] In some embodiments, the air conditioner includes a plurality of first bypass flow paths and a plurality of second bypass flow paths, wherein the plurality of heat exchange sections, the plurality of first bypass flow paths and the plurality of second bypass flow paths are configured in a one-to-one correspondence.

[0006] In some embodiments, the air conditioner includes a first distributor disposed between the first valve port and the outdoor heat exchanger. The first distributor has a first main liquid port and a plurality of first distribution ports. The first main liquid port is connected to the first valve port, and the plurality of first distribution ports are connected to the plurality of heat exchange sections in a one-to-one correspondence.

[0007] In some embodiments, the air conditioner includes a plurality of third switch control valves, which are arranged in a one-to-one correspondence with the plurality of heat exchange sections. The third switch control valves are disposed on the connecting flow path between the first liquid outlet and the heat exchange section.

[0008] In some embodiments, the air conditioner includes a second liquid distributor disposed between the outdoor heat exchanger and the throttling element. The second liquid distributor has a second main liquid inlet and a plurality of liquid outlets. The second main liquid inlet is connected to the throttling element, and the plurality of second liquid outlets are connected to the plurality of heat exchange sections in a one-to-one correspondence.

[0009] In some embodiments, the air conditioner includes a plurality of fourth switch control valves, which are arranged in a one-to-one correspondence with the plurality of heat exchange sections. The fourth switch control valves are disposed on the connecting flow path between the second liquid outlet and the heat exchange section.

[0010] In some embodiments, the outdoor heat exchanger includes a flow passage disposed on the connection path between the throttling element and the second main liquid inlet.

[0011] In some embodiments, the air conditioner includes a one-way valve, the indoor heat exchanger, the one-way valve, the first bypass flow path, and the heat exchange section are connected in sequence, the liquid inlet of the one-way valve is connected to the indoor heat exchanger, and the liquid outlet of the one-way valve is connected to the first bypass flow path; when the air conditioner includes multiple first bypass flow paths, the multiple first bypass flow paths are respectively connected to the liquid outlet of the one-way valve.

[0012] In some embodiments, the air conditioner includes a plurality of temperature sensing elements, and each heat exchange section is provided with one temperature sensing element.

[0013] In some embodiments, the outdoor heat exchanger is provided with a plurality of flow guide channels, and the plurality of flow guide channels and the plurality of heat exchange sections are arranged in a one-to-one correspondence. The flow guide channels are used to guide condensate or defrost water.

[0014] In some embodiments, the reversing valve has a third valve port and a fourth valve port, the compressor has an exhaust port and an intake port, the third valve port is connected to the exhaust port, and the fourth valve port is connected to the intake port.

[0015] This embodiment of the application sets the outdoor heat exchanger to have multiple heat exchange sections connected in parallel. When the air conditioner is in heating mode and the outdoor heat exchanger needs to be defrosted, the first switch control valve on the first bypass flow path and the second switch control valve on the second bypass flow path can be controlled to open, so that the first bypass flow path and the second bypass flow path are in a conducting state. This allows a portion of the refrigerant flowing out of the second valve port to flow from the second bypass flow path to the corresponding heat exchange section to defrost the heat exchanger. Then, after passing through the first bypass flow path, it merges with the refrigerant flowing out of the indoor heat exchanger and flows to the throttling element and the remaining heat exchange sections. Heating is then provided through the other heat exchange sections except the one that needs to be defrosted, enabling the air conditioner to achieve a defrosting function without stopping the unit, thus improving the user comfort of the air conditioner. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a connection structure diagram of an air conditioner provided in some embodiments of this application;

[0018] Figure 2 This is a structural diagram of the air conditioner in cooling mode provided in some embodiments of this application;

[0019] Figure 3 This is a structural diagram of the air conditioner in heating mode provided in some embodiments of this application;

[0020] Figure 4 This is a diagram showing the operational connection structure of an air conditioner in heating mode during defrosting, as provided in some embodiments of this application.

[0021] Description of main component symbols:

[0022] 1-Air conditioner, 10-Compressor, 11-Exhaust port, 12-Intake port, 20-Reversing valve, 21-First valve port, 22-Second valve port, 23-Third valve port, 24-Fourth valve port, 30-Indoor heat exchanger, 40-Throttling element, 50-Outdoor heat exchanger, 51-Heat exchange section, 52-Flow section, 53-Guide channel, 60-First bypass flow path, 61-First switch control valve, 70-Second bypass flow path, 71-Second switch control valve, 81-First distributor, 82-Second distributor, 91-Third switch control valve, 92-Fourth switch control valve, 93-Check valve, 94-Temperature sensing element. Detailed Implementation

[0023] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of the stated features. In the description of this application, "a plurality of" means two or more, unless otherwise explicitly specified.

[0025] "A and / or B" includes the following three combinations: A only, B only, and a combination of A and B.

[0026] The use of "applies to" or "configured to" in this application implies open and inclusive language, which does not exclude the applicability to or configuration to devices performing additional tasks or steps. Additionally, the use of "based on" implies openness and inclusivity, because processes, steps, calculations, or other actions "based on" one or more of the stated conditions or values ​​may in practice be based on additional conditions or values ​​beyond those stated.

[0027] In this application, the term "exemplary" is used to mean "used as an example, illustration, or description." Any embodiment described as "exemplary" in this application is not necessarily to be construed as being more preferred or advantageous than other embodiments. The following description is provided to enable any person skilled in the art to make and use this application. Details are set forth in the following description for purposes of explanation. It should be understood that those skilled in the art will recognize that this application can be made without using these specific details. In other instances, well-known structures and processes are not described in detail to avoid obscuring the description of this application with unnecessary detail. Therefore, this application is not intended to be limited to the embodiments shown, but is consistent with the broadest scope of the principles and features disclosed in this application.

[0028] like Figure 1 As shown, this application provides an air conditioner 1, which includes a compressor 10, a reversing valve 20, an indoor heat exchanger 30, a throttling element 40, an outdoor heat exchanger 50, at least one first bypass flow path 60 and at least one second bypass flow path 70. It can achieve a non-stop defrosting function with a single outdoor heat exchanger 50, thereby improving the user comfort of the air conditioner 1.

[0029] Here, the reversing valve 20 has a first valve port 21 and a second valve port 22. The first valve port 21 is used to connect to the outdoor heat exchanger 50, and the second valve port 22 is used to connect to the indoor heat exchanger 30. By utilizing the reversing function of the reversing valve 20, the air conditioner 1 can switch between cooling mode and heating mode.

[0030] Here, the outdoor heat exchanger 50 has multiple heat exchange sections 51, which are integrated in the same outdoor heat exchanger 50; and the multiple heat exchange sections 51 are arranged in parallel between the first valve port 21 and the throttling element 40, so that each heat exchange section 51 is connected to the first valve port 21 and the throttling element 40 respectively.

[0031] Here, the indoor heat exchanger 30 is connected to the second valve port 22 and the throttling element 40. The first bypass flow path 60 and the second bypass flow path 70 are configured in a one-to-one correspondence. The first bypass flow path 60 is equipped with a first on / off control valve 61 for controlling the opening and closing of the first bypass flow path 60, and the second bypass flow path 70 is equipped with a second on / off control valve 71 for controlling the opening and closing of the second bypass flow path 70. The first bypass flow path 60 connects one end of a heat exchange section 51 connected to the first valve port 21 and one end of the indoor heat exchanger 30 connected to the throttling element 40. The second bypass flow path 70 connects one end of the heat exchange section 51 connected to the throttling element 40 and one end of the indoor heat exchanger 30 connected to the second valve port 22.

[0032] The number of first bypass flow paths 60 and second bypass flow paths 70 can be determined according to actual needs, and can be one or more, which is not limited in this embodiment. In some embodiments, the air conditioner 1 may have only one first bypass flow path 60 and one second bypass flow path 70, and the first bypass flow path 60 and the second bypass flow path 70 are respectively configured to correspond to the same heat exchange section 51; for example, the heat exchange section 51 with a higher risk of frosting in the outdoor heat exchanger 50 can be determined according to the actual operating conditions of the air conditioner 1, and then the first bypass flow path 60 and the second bypass flow path 70 are respectively connected to the heat exchange section 51 with a higher risk of frosting. In other embodiments, the air conditioner 1 may include multiple first bypass flow paths 60 and multiple second bypass flow paths 70, and multiple heat exchange sections 51, multiple first bypass flow paths 60 and multiple second bypass flow paths 70 are configured in a one-to-one correspondence, such that each heat exchange section 51 is respectively configured with one first bypass flow path 60 and one second bypass flow path 70.

[0033] like Figure 2As shown, when the air conditioner 1 is in cooling mode, the first switch control valve 61 and the second switch control valve 71 can remain closed, keeping the first bypass flow path 60 and the second bypass flow path 70 disconnected. At this time, the refrigerant can flow out from the first valve port 21 and flow to each heat exchange section 51 of the outdoor heat exchanger 50. After passing through the outdoor heat exchanger 50, it flows back into the throttling element 40, and then flows through the indoor heat exchanger 30 to the second valve port 22, thus achieving the purpose of cooling cycle.

[0034] like Figure 3 As shown, when the air conditioner 1 is in heating mode, if the outdoor heat exchanger 50 does not need to defrost, the first switch control valve 61 and the second switch control valve 71 can remain closed, keeping the first bypass flow path 60 and the second bypass flow path 70 disconnected. At this time, the refrigerant can flow out from the second valve port 22, pass sequentially through the indoor heat exchanger 30 and the throttling element 40, and then flow to each heat exchange section 51 of the outdoor heat exchanger 50. After passing through the outdoor heat exchanger 50, it flows back to the first valve port 21, achieving the purpose of heating cycle.

[0035] When the air conditioner 1 is in heating mode, if the outdoor heat exchanger 50 needs to be defrosted and the air conditioner 1 only has a first bypass flow path 60 and a second bypass flow path 70, the first switch control valve 61 on the first bypass flow path 60 and the second switch control valve 71 on the second bypass flow path 70 can be directly controlled to open, so that the first bypass flow path 60 and the second bypass flow path 70 are in a conducting state. At this time, a portion of the refrigerant flowing out of the second valve port 22 flows through the indoor heat exchanger 30, while another portion of the refrigerant flows from the second bypass flow path 70 to the corresponding heat exchange section 51 to defrost the heat exchanger. Then, after passing through the first bypass flow path 60, it merges with the refrigerant flowing out of the indoor heat exchanger 30 and flows to the throttling element 40 and the remaining heat exchange sections 51. Heating is achieved through the other heat exchange sections 51 except for the heat exchange section 51 that needs to be defrosted, so that the air conditioner 1 can achieve a non-stop defrosting function, improving the user comfort of the air conditioner 1.

[0036] like Figure 4As shown, when the air conditioner 1 is in heating mode, if the outdoor heat exchanger 50 needs to be defrosted and the air conditioner 1 is provided with multiple first bypass flow paths 60 and multiple second bypass flow paths 70, the first switch control valve 61 on the first bypass flow path 60 corresponding to the heat exchange section 51 that needs to be defrosted and the second switch control valve 71 on the second bypass flow path 70 can be controlled to be turned on, so that the first bypass flow path 60 and the second bypass flow path 70 are in the conducting state. At this time, a portion of the refrigerant flowing out of the second valve port 22 flows through the indoor heat exchanger 30, while another portion of the refrigerant flows from the second bypass flow path 70 to the heat exchange section 51 that needs to be defrosted to defrost the heat exchanger. Then, after passing through the first bypass flow path 60, it merges with the refrigerant flowing out of the indoor heat exchanger 30 and flows to the throttling element 40 and the remaining heat exchange sections 51. Heating is then provided through the other heat exchange sections 51 except for the heat exchange section 51 that needs to be defrosted, so that the air conditioner 1 can achieve the function of defrosting without stopping, thereby improving the comfort of using the air conditioner 1.

[0037] In some embodiments, the air conditioner 1 may include a first distributor 81, which is disposed between the first valve port 21 and the outdoor heat exchanger 50. The first distributor 81 has a first main liquid port and a plurality of first distribution ports. The first main liquid port is connected to the first valve port 21, and the plurality of first distribution ports are connected one-to-one with a plurality of heat exchange sections 51, such that each heat exchange section 51 is connected to a first distribution port. When the air conditioner 1 is in cooling mode, the refrigerant can flow from the first valve port 21 to the first main liquid port, and after being diverted by the first distributor 81, it flows to each of the first distribution ports, and then flows to the corresponding heat exchange section 51 through each of the first distribution ports, thus achieving the purpose of diversion. When the air conditioner 1 is in heating mode, the refrigerant flowing out from each heat exchange section 51 can enter the first distributor 81 through the corresponding first distribution port, and then converge in the first distributor 81 before flowing to the first valve port 21 through the first main liquid port.

[0038] In some examples, the air conditioner 1 may include multiple third-switch control valves 91. The multiple third-switch control valves 91 are configured one-to-one with multiple heat exchange sections 51, and the third-switch control valves 91 are located in the flow path connecting the first liquid distributor and the heat exchange section 51. When the third-switch control valve 91 is open, refrigerant can flow between the first liquid distributor and the heat exchange section 51; when the third-switch control valve 91 is closed, refrigerant cannot flow between the first liquid distributor and the heat exchange section 51.

[0039] In some embodiments, the air conditioner 1 may include a second distributor 82 disposed between the outdoor heat exchanger 50 and the throttling element 40. The second distributor 82 has a second main liquid inlet and multiple distribution outlets. The second main liquid inlet is connected to the throttling element 40, and the multiple second distribution outlets are connected one-to-one with multiple heat exchange sections 51, such that each heat exchange section 51 is connected to one second distribution outlet. When the air conditioner 1 is in heating mode, refrigerant can flow from the throttling element 40 to the second main liquid inlet, and after being diverted by the second distributor 82, it flows to each of the respective second distribution outlets, and then flows to the corresponding heat exchange section 51 through each of the second distribution outlets, thus achieving the diversion purpose. When the air conditioner 1 is in cooling mode, the refrigerant flowing out from each heat exchange section 51 can enter the second distributor 82 through the corresponding second distribution outlet, and then converges in the second distributor 82 before flowing to the throttling element 40 through the second main liquid inlet.

[0040] In some examples, the air conditioner 1 may include multiple fourth switch control valves 92, with each of the multiple fourth switch control valves 92 corresponding to a multiple heat exchange section 51. The fourth switch control valves 92 are located on the flow path connecting the second liquid distributor and the heat exchange section 51. When the fourth switch control valve 92 is open, the refrigerant can flow between the second liquid distributor and the heat exchange section 51; when the fourth switch control valve 92 is closed, the refrigerant cannot flow between the second liquid distributor and the heat exchange section 51.

[0041] In some examples, the outdoor heat exchanger 50 may include a flow section 52, which is arranged adjacent to and integrated with the heat exchange section 51 in the same outdoor heat exchanger 50; the flow section 52 is arranged in the connection flow path of the throttling element 40 and the second main liquid port so that the refrigerant can flow between the throttling element 40 and the second main liquid port.

[0042] In some embodiments, the air conditioner 1 may include a one-way valve 93, an indoor heat exchanger 30, a one-way valve 93, a first bypass flow path 60, and a heat exchange section 51 connected in sequence. The inlet of the one-way valve 93 is connected to the indoor heat exchanger 30, and the outlet of the one-way valve 93 is connected to the first bypass flow path 60. This prevents refrigerant flowing out of the indoor heat exchanger 30 from flowing into the first bypass flow path 60, allowing only the refrigerant after defrosting the heat exchange section 51 to flow through the first bypass flow path 60 and merge with the refrigerant flowing out of the indoor heat exchanger 30. When the air conditioner 1 includes multiple first bypass flow paths 60, each of the multiple first bypass flow paths 60 is connected to the outlet of the one-way valve 93; thus, a single one-way valve 93 can be used to simultaneously control the unidirectional flow of multiple first bypass flow paths 60, saving on the number of components and cost.

[0043] In some embodiments, the air conditioner 1 may include a plurality of temperature sensing elements 94, with one temperature sensing element 94 corresponding to each heat exchange section 51. Here, the temperature sensing element 94 can be used to detect the temperature of the corresponding heat exchange section 51 to determine whether the heat exchange section 51 is frosted, and then control the corresponding first bypass flow path 60 and second bypass flow path 70 to be opened when frosting occurs, so as to use the higher temperature refrigerant to defrost the heat exchange section 51.

[0044] In some embodiments, the outdoor heat exchanger 50 may be provided with a plurality of guide channels 53. The plurality of guide channels 53 and the plurality of heat exchange sections 51 are arranged in a one-to-one correspondence, and the guide channels 53 are used to guide the condensate or defrost water generated on the corresponding heat exchange section 51.

[0045] In some embodiments, the reversing valve 20 may have a third valve port 23 and a fourth valve port 24, and the compressor 10 may have an exhaust port 11 and an intake port 12. The third valve port 23 is connected to the exhaust port 11, and the fourth valve port 24 is connected to the intake port 12.

[0046] The air conditioner provided in the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of this application. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. An air conditioner, characterized in that, The device includes a compressor, a reversing valve, an indoor heat exchanger, a throttling element, an outdoor heat exchanger, at least one first bypass flow path, and at least one second bypass flow path. The reversing valve has a first valve port and a second valve port. The outdoor heat exchanger has multiple heat exchange sections arranged in parallel between the first valve port and the throttling element. The indoor heat exchanger connects the second valve port and the throttling element. The first bypass flow path connects one end of the heat exchange section connected to the first valve port and one end of the indoor heat exchanger connected to the throttling element. The second bypass flow path connects one end of the heat exchange section connected to the throttling element and one end of the indoor heat exchanger connected to the second valve port. The first bypass flow path and the second bypass flow path are arranged in a one-to-one correspondence. A first on / off control valve is provided on the first bypass flow path, and a second on / off control valve is provided on the second bypass flow path.

2. The air conditioner according to claim 1, characterized in that, The air conditioner includes multiple first bypass flow paths and multiple second bypass flow paths, and the multiple heat exchange sections, the multiple first bypass flow paths and the multiple second bypass flow paths are arranged in a one-to-one correspondence.

3. The air conditioner according to claim 1, characterized in that, The air conditioner includes a first liquid distributor disposed between the first valve port and the outdoor heat exchanger. The first liquid distributor has a first main liquid port and a plurality of first liquid distribution ports. The first main liquid port is connected to the first valve port, and the plurality of first liquid distribution ports are connected to the plurality of heat exchange sections in a one-to-one correspondence.

4. The air conditioner according to claim 3, characterized in that, The air conditioner includes multiple third switch control valves, which are arranged in a one-to-one correspondence with the multiple heat exchange sections. The third switch control valves are located on the connecting flow path between the first liquid outlet and the heat exchange section.

5. The air conditioner according to claim 1, characterized in that, The air conditioner includes a second liquid distributor disposed between the outdoor heat exchanger and the throttling element. The second liquid distributor has a second main liquid inlet and a plurality of second liquid outlets. The second main liquid inlet is connected to the throttling element, and the plurality of second liquid outlets are connected to the plurality of heat exchange sections in a one-to-one correspondence.

6. The air conditioner according to claim 5, characterized in that, The air conditioner includes multiple fourth switch control valves, which are arranged in a one-to-one correspondence with the multiple heat exchange sections. The fourth switch control valves are located on the connecting flow path between the second liquid outlet and the heat exchange section.

7. The air conditioner according to claim 5, characterized in that, The outdoor heat exchanger includes a flow passage, which is disposed on the connection flow path between the throttling element and the second main liquid inlet.

8. The air conditioner according to claim 1, characterized in that, The air conditioner includes a one-way valve, and the indoor heat exchanger, the one-way valve, the first bypass flow path, and the heat exchange section are connected in sequence. The liquid inlet of the one-way valve is connected to the indoor heat exchanger, and the liquid outlet of the one-way valve is connected to the first bypass flow path. When the air conditioner includes multiple first bypass flow paths, the multiple first bypass flow paths are respectively connected to the liquid outlet of the one-way valve.

9. The air conditioner according to claim 1, characterized in that, The air conditioner includes multiple temperature sensing elements, and each heat exchange section is provided with one temperature sensing element; and / or, the outdoor heat exchanger is provided with multiple flow guide grooves, and the multiple flow guide grooves are provided in a one-to-one correspondence with the multiple heat exchange sections, and the flow guide grooves are used to guide condensate or defrost water.

10. The air conditioner according to claim 1, characterized in that, The reversing valve has a third valve port and a fourth valve port, and the compressor has an exhaust port and an intake port. The third valve port is connected to the exhaust port, and the fourth valve port is connected to the intake port.

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