Reheating dehumidification fresh air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a reheating and dehumidifying fresh air conditioning system which comprises a compressor, a fresh air conditioning system, a fresh air conditioning system and a fresh air conditioning system. The four-way valve assembly comprises a system four-way valve and a reheating four-way valve, the system four-way valve is arranged on the first exhaust branch, and the reheating four-way valve is arranged on the second exhaust branch; the outdoor heat exchanger is communicated with the system four-way valve; the indoor heat exchange assembly comprises a dehumidification heat exchanger and a reheating heat exchanger, one end of the dehumidification heat exchanger communicates with the outdoor heat exchanger, the other end of the dehumidification heat exchanger communicates with the system four-way valve, one end of the reheating heat exchanger communicates with the reheating four-way valve, and the other end of the reheating heat exchanger communicates with the dehumidification heat exchanger. The reheating dehumidification fresh air conditioning system further comprises a full-effect heat exchanger, so that indoor inlet air flows through the full-effect heat exchanger to become fresh air and then flows through the indoor heat exchange assembly. According to the reheating dehumidification fresh air conditioning system, constant-temperature dehumidification of fresh air is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioning, for example to a reheating dehumidification fresh air air conditioning system. BACKGROUND

[0002] At present, air conditioning systems are used in buildings to meet the comfort requirements of human beings on the temperature and humidity of the living environment. When dehumidification is performed using an air conditioning system, while the humidity is adjusted, different users or different weather conditions have different requirements for the temperature during dehumidification. For example, constant temperature dehumidification requirements or temperature increasing dehumidification requirements. Among them, constant temperature dehumidification requires the air conditioning system to maintain the indoor environment temperature unchanged when dehumidifying.

[0003] The existing constant temperature dehumidification air conditioner is provided with two heat exchangers in the room, one of which is used for dehumidification, and the other is used for reheating the dehumidified air to achieve the purpose of constant temperature dehumidification.

[0004] In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

[0005] The existing constant temperature dehumidification air conditioner, since the areas of the heat exchanger for dehumidification and the heat exchanger for reheating are fixed, can only achieve slight temperature reduction dehumidification, and cannot achieve constant temperature dehumidification.

[0006] It should be noted that the information disclosed in the above background section is only used to strengthen the understanding of the background of the present application, and therefore can include information that does not constitute prior art known to those of ordinary skill in the art. Invention content

[0007] In order to have a basic understanding of some aspects of the disclosed embodiments, a brief summary is given below. The summary is not a general review, nor does it determine the key / important components or delineate the protection scope of these embodiments, but serves as a prelude to the detailed description below.

[0008] The reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure comprises a compressor comprising a suction port and an exhaust port, the exhaust port is provided with a first exhaust branch and a second exhaust branch; a four-way valve assembly comprising a system four-way valve and a reheating four-way valve, the system four-way valve is arranged in the first exhaust branch, and the reheating four-way valve is arranged in the second exhaust branch; an outdoor heat exchanger in communication with the system four-way valve; an indoor heat exchange assembly comprising a dehumidification heat exchanger and a reheating heat exchanger, wherein one end of the dehumidification heat exchanger is in communication with the outdoor heat exchanger, the other end is in communication with the system four-way valve, one end of the reheating heat exchanger is in communication with the reheating four-way valve, and the other end is in communication with the dehumidification heat exchanger. Wherein, the reheating dehumidification fresh air air conditioning system further comprises a full-effect heat exchanger, so that the indoor inlet air first flows through the full-effect heat exchanger to become fresh air, and then flows through the indoor heat exchange assembly.

[0009] In some optional embodiments, the reheating dehumidifying fresh air air conditioning system further comprises a first indoor communication pipeline in communication with the dehumidifying heat exchanger and the reheating heat exchanger, wherein the first indoor communication pipeline comprises a first pipe section in communication with the dehumidifying heat exchanger, and a second pipe section in communication with the reheating heat exchanger, and the second pipe section is provided with a first throttling element.

[0010] In some optional embodiments, the reheating dehumidifying fresh air air conditioning system further comprises an online pipe section in communication between the outdoor heat exchanger and the first indoor communication pipeline, and the online pipe section is provided with a second throttling element, wherein the online pipe section is in communication with the first pipe section of the first indoor communication pipeline.

[0011] In some optional embodiments, the first exhaust branch is provided with a first flow regulating element to regulate the amount of refrigerant flowing through the system four-way valve; and the second exhaust branch is provided with a second flow regulating element to regulate the amount of refrigerant flowing through the reheating four-way valve.

[0012] In some optional embodiments, the distance between the reheating heat exchanger and the dehumidifying heat exchanger is less than or equal to a first preset distance.

[0013] In some optional embodiments, the heat exchange area of the reheating heat exchanger is less than or equal to the heat exchange area of the outdoor heat exchanger.

[0014] In some optional embodiments, the heat exchange area of the dehumidifying heat exchanger is greater than or equal to the heat exchange area of the reheating heat exchanger.

[0015] In some optional embodiments, the length of the dehumidifying heat exchanger is the same as the length of the reheating heat exchanger; and / or, the width of the dehumidifying heat exchanger is the same as the width of the reheating heat exchanger.

[0016] In some optional embodiments, the reheating dehumidifying fresh air air conditioning system further comprises a first controller, wherein the first controller is configured to control the first flow regulating element provided in the first exhaust branch to be turned on, and at the same time, control the second flow regulating element provided in the second exhaust branch to be turned on, so that the refrigerant discharged by the compressor enters the first exhaust branch, enters the outdoor heat exchanger through the system four-way valve, condenses and enters the dehumidifying heat exchanger through the second throttling element, and dehumidifies the fresh air after flowing through the total heat exchanger; the refrigerant discharged by the compressor enters the second exhaust branch, flows into the reheating heat exchanger through the reheating four-way valve, and heats the dehumidified fresh air, to realize the first reheating dehumidifying fresh air mode.

[0017] In some optional embodiments, the reheat dehumidification fresh air air conditioning system also includes a second controller, wherein the second controller is configured to control the first flow regulating element provided in the first exhaust branch to be closed, and at the same time, control the second flow regulating element provided in the second exhaust branch to be opened, so that the refrigerant discharged from the compressor enters the second exhaust branch, flows into the reheat heat exchanger through the reheat four-way valve, and then flows through the first throttling element provided between the reheat heat exchanger and the dehumidification heat exchanger, and then flows into the dehumidification heat exchanger to dehumidify the fresh air after flowing through the full-effect heat exchanger to realize the second reheat dehumidification fresh air mode.

[0018] The reheat dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure can achieve the following technical effects:

[0019] Optionally, the reheat dehumidification fresh air air conditioning system includes a compressor, a four-way valve assembly, an outdoor heat exchanger, and an indoor heat exchange assembly. The compressor includes an intake port and an exhaust port, the exhaust port being provided with a first exhaust branch and a second exhaust branch; the four-way valve assembly includes a system four-way valve and a reheat four-way valve, the system four-way valve being provided in the first exhaust branch, and the reheat four-way valve being provided in the second exhaust branch; the outdoor heat exchanger is connected to the system four-way valve; the indoor heat exchange assembly includes a dehumidification heat exchanger and a reheat heat exchanger, wherein one end of the dehumidification heat exchanger is connected to the outdoor heat exchanger and the other end is connected to the system four-way valve, and one end of the reheat heat exchanger is connected to the reheat four-way valve and the other end is connected to the dehumidification heat exchanger. The reheat dehumidification fresh air air conditioning system also includes a full-effect heat exchanger, so that the indoor incoming air first flows through the full-effect heat exchanger to become fresh air, and then flows through the indoor heat exchange assembly.

[0020] The reheat dehumidification fresh air air conditioning system provided by the embodiment of the present disclosure is provided with a full-effect heat exchanger. The full-effect heat exchanger performs heat exchange on the incoming and outgoing air, ensuring that the heat or cold of the air discharged outdoors is completely absorbed by the indoor air, and assumes the function of fully recovering the energy of the indoor wind. At the same time, the setting of the dehumidification heat exchanger and the reheat heat exchanger enables the air conditioning system to achieve constant temperature dehumidification.

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

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

[0023] Figure 1 Schematic diagram of a reheat dehumidification fresh air air conditioning system provided by an embodiment of the present disclosure;

[0024] Figure 2is a partial schematic view of a reheating dehumidifying fresh air air conditioning system provided by an embodiment of the present disclosure;

[0025] Figure 3 is a schematic view of another reheating dehumidifying fresh air air conditioning system provided by an embodiment of the present disclosure;

[0026] Figure 4 is a refrigerant flow schematic view of a reheating dehumidifying fresh air air conditioning system provided by an embodiment of the present disclosure running a first reheating dehumidifying fresh air mode;

[0027] Figure 5 is a refrigerant flow schematic view of a reheating dehumidifying fresh air air conditioning system provided by an embodiment of the present disclosure running a second reheating dehumidifying fresh air mode;

[0028] Figure 6 is a schematic view of a fresh air reheating dehumidifying air conditioning system provided by an embodiment of the present disclosure;

[0029] Figure 7 is a refrigerant flow schematic view of a fresh air reheating dehumidifying air conditioning system provided by an embodiment of the present disclosure running a first reheating dehumidifying fresh air mode;

[0030] Figure 8 is a refrigerant flow schematic view of a fresh air reheating dehumidifying air conditioning system provided by an embodiment of the present disclosure running a second reheating dehumidifying fresh air mode.

[0031] Reference signs:

[0032] 1: compressor; 11: discharge port; 111: first discharge branch; 112: second discharge branch; 12: suction port; 121: first suction branch; 122: second suction branch; 123: suction electromagnetic valve; 1111: first flow regulating element; 1121: second flow regulating element;

[0033] 21: system four-way valve; 22: reheating four-way valve; 221: fourth end;

[0034] 3: outdoor heat exchanger; 301: on-line pipe section; 302: second throttling element;

[0035] 41: dehumidifying heat exchanger; 42: reheating heat exchanger; 401: first pipe section; 402: second pipe section; 403: first throttling element;

[0036] 5: full-effect heat exchanger. DETAILED DESCRIPTION

[0037] In order to enable a more detailed understanding of the features and technical content of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the drawings, which are only used for reference and do not limit the embodiments of the present disclosure. In the following technical description, in order to facilitate explanation, a plurality of details are provided to provide a sufficient understanding of the disclosed embodiments. However, one or more embodiments can still be implemented without these details. In other cases, well-known structures and devices can be simplified to facilitate the drawings.

[0038] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily have to describe a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances in order to describe the embodiments of the present disclosure herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0039] In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "back", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. These terms are mainly used to better describe the embodiments of the present disclosure and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate the orientation or positional relationship, the above-mentioned terms can also be used to represent other meanings, for example, the term "upper" can also be used to represent a certain attachment relationship or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0040] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixedly connected, detachably connected, or integrally configured; can be mechanically connected, or electrically connected; can be directly connected, or indirectly connected through an intermediate medium, or internal communication between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present disclosure can be understood according to the specific circumstances.

[0041] Unless otherwise specified, the term "a plurality of" means two or more.

[0042] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B represents: A or B.

[0043] The term "and / or" is a description of the association between objects, which means that there can be three relationships. For example, A and / or B, which means: A or B, or, A and B, the three relationships.

[0044] It should be noted that the embodiments in the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0045] The present disclosure provides a reheat dehumidification fresh air air conditioning system, which can also be referred to as a fresh air reheat dehumidification air conditioning system, as shown in Figures 1 to 5

[0046] Optionally, the reheat dehumidification fresh air air conditioning system comprises a compressor 1, a four-way valve assembly, an outdoor heat exchanger 3 and an indoor heat exchange assembly. The compressor 1 comprises a suction port 12 and a discharge port 11, and the discharge port 11 is provided with a first discharge branch 111 and a second discharge branch 112; the four-way valve assembly comprises a system four-way valve 21 and a reheat four-way valve 22, the system four-way valve 21 is arranged in the first discharge branch 111, and the reheat four-way valve 22 is arranged in the second discharge branch 112; the outdoor heat exchanger 3 is in communication with the system four-way valve 21; the indoor heat exchange assembly comprises a dehumidification heat exchanger 41 and a reheat heat exchanger 42, wherein one end of the dehumidification heat exchanger 41 is in communication with the outdoor heat exchanger 3, the other end is in communication with the system four-way valve 21, one end of the reheat heat exchanger 42 is in communication with the reheat four-way valve 22, and the other end is in communication with the dehumidification heat exchanger 41. Wherein, the reheat dehumidification fresh air air conditioning system further comprises a full-effect heat exchanger 5, so that the indoor inlet air first flows through the full-effect heat exchanger 5 to become fresh air after heat recovery, and then flows through the indoor heat exchange assembly.

[0047] The reheat dehumidification fresh air air conditioning system provided by the present disclosure comprises a compressor 1, a four-way valve assembly, an outdoor heat exchanger 3 and an indoor heat exchange assembly, and the indoor heat exchange assembly comprises a dehumidification heat exchanger 41 and a reheat heat exchanger 42 to perform dehumidification and reheat respectively. At the same time, the reheat dehumidification fresh air air conditioning system provided by the present disclosure further comprises a full-effect heat exchanger 5, so that the indoor inlet air first flows through the full-effect heat exchanger 5 to become fresh air after heat recovery, and then flows through the indoor heat exchange assembly to perform dehumidification and reheat. In this way, the air conditioning system can perform dehumidification, and the full-effect heat exchanger 5 can recover the heat of the indoor air, thereby improving the temperature control effect when the air conditioning system operates in the constant temperature dehumidification mode.

[0048] At the same time, in the reheat dehumidification fresh air air conditioning system provided by the present disclosure, the refrigerant in the reheat heat exchanger 42 for reheat comes from the second discharge branch 112 provided with the reheat four-way valve 22, and the refrigerant in the dehumidification heat exchanger 41 for dehumidification comes from the first discharge branch 111 provided with the system four-way valve 21. In this way, the heat exchange capacity of the reheat heat exchanger 42 and the dehumidification heat exchanger 41 can be adjusted by respectively adjusting the amount of refrigerant in the first discharge branch 111 and the second discharge branch 112.

[0049] ​Optionally, the first exhaust branch 111 is provided with a first flow regulating element 1111 to regulate the amount of refrigerant flowing through the system four-way valve 21; the second exhaust branch 112 is provided with a second flow regulating element 1121 to regulate the amount of refrigerant flowing through the reheating four-way valve 22. As shown in Figure 3

[0050] For example, when the air conditioning system is running a dehumidification process, the current indoor temperature of the user is reduced by 3℃ or even more than the initial indoor temperature. It is considered that the indoor temperature of the user is reduced during the dehumidification process. At this time, the amount of refrigerant in the second exhaust branch 112 can be increased, the amount of refrigerant entering the reheating heat exchanger 42 can be increased, and the amount of refrigerant in the first exhaust branch 111 can be reduced, and the amount of refrigerant entering the dehumidification heat exchanger 41 can be reduced, so as to increase the indoor temperature of the user.

[0051] Alternatively, when the air conditioning system runs in the dehumidification mode, first, enter the temperature rising stage, adjust the opening of the second flow regulating element 1121 to be larger than the opening of the first flow regulating element 1111, so that the opening of the second flow regulating element is larger than the opening of the first flow regulating element 1111. In the temperature rising stage, the indoor temperature of the user is appropriately raised by the reheating heat exchanger 42, for example, by 2-5℃. At this time, the increased temperature can provide a certain temperature storage for the subsequent rapid dehumidification process. Secondly, enter the rapid dehumidification stage, adjust the opening of the first flow regulating element 1111 to be larger than or equal to the opening of the second flow regulating element 1121. This process mainly makes the dehumidification heat exchanger 41 quickly play a dehumidification function to quickly adjust the indoor humidity of the user. Finally, enter the temperature compensation stage. When the rapid dehumidification stage is completed, if the current indoor temperature is lower than the initial temperature, adjust the opening of the first flow regulating element 1111 to be smaller than the opening of the second flow regulating element 1121, so that the reheating heat exchanger 42 compensates the indoor temperature of the user.

[0052] Optionally, the rapid dehumidification stage and the temperature compensation stage are alternately performed. In the rapid dehumidification stage and the temperature compensation stage provided by the embodiment of the present disclosure, the flow direction of the refrigerant is unchanged. Based on this, the rapid dehumidification stage and the temperature compensation stage can be alternately and stably performed. For example, when the rapid dehumidification stage reduces the humidity by 10%, at this time, it can be detected whether the indoor temperature needs to be compensated. If so, the temperature compensation stage is run at this time to improve the effect of temperature control in the dehumidification process.

[0053] It can be seen that the reheating dehumidification fresh air conditioning system provided by the embodiment of the present disclosure can adjust the amount of refrigerant entering the dehumidification heat exchanger 41 and the reheating heat exchanger 42 according to the temperature and humidity requirements of the user, and further adjust the heat exchange capacity of the dehumidification heat exchanger 41 and the reheating heat exchanger 42, so as to realize constant temperature dehumidification, even temperature rising dehumidification, and meet the requirements of the user.

[0054] ​Optionally, the reheating dehumidification fresh air conditioning system further comprises a first indoor communication pipeline in communication with the dehumidification heat exchanger 41 and the reheating heat exchanger 42, wherein the first indoor communication pipeline comprises a first pipe section 401 in communication with the dehumidification heat exchanger 41, and a second pipe section 402 in communication with the reheating heat exchanger 42, and the second pipe section 402 is provided with a first throttling element 403. Figure 2

[0055] In the embodiments of the present disclosure, the first indoor communication pipeline in communication with the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is provided with the first throttling element 403, and the first throttling element 403 is arranged in the second pipe section 402 in direct communication with the reheating heat exchanger 42. Optionally, the length of the first indoor communication pipeline is greater than or equal to a preset length, so that the gas-liquid mixing degree of the refrigerant flowing through the first throttling element 403 is increased before flowing into the dehumidification heat exchanger 41. Optionally, the first throttling element 403 can be an electronic expansion valve.

[0056] Optionally, the second pipe section 402 is provided with a filter screen or other discrete element to improve the gas-liquid mixing degree of the refrigerant flowing into the dehumidification heat exchanger 41.

[0057] Optionally, the reheating dehumidification fresh air conditioning system further comprises an online pipe section 301 in communication between the outdoor heat exchanger 3 and the first indoor communication pipeline, and the online pipe section 301 is provided with a second throttling element 302, wherein the online pipe section 301 is in communication with the first pipe section 401 of the first indoor communication pipeline.

[0058] The online pipe section 301 in communication between the outdoor heat exchanger 3 and the first indoor communication pipeline is provided with the second throttling element 302, and the online pipe section 301 is in communication with the first pipe section 401 of the first indoor communication pipeline, so that the refrigerant of the outdoor heat exchanger 3 can flow into the dehumidification heat exchanger 41 without flowing through the first throttling element 403 after flowing through the second throttling element 302. Optionally, the second throttling element 302 can be an electronic expansion valve.

[0059] Optionally, the distance between the reheating heat exchanger 42 and the dehumidification heat exchanger 41 is less than or equal to a first preset distance.

[0060] ​In the embodiments of the present disclosure, the reheating heat exchanger 42 and the dehumidification heat exchanger 41 are arranged in the shell of the indoor heat exchanger, and the reheating heat exchanger 42 and the dehumidification heat exchanger 41 are arranged side by side between the air inlet and the air outlet of the shell, the reheating heat exchanger 42 is arranged close to the air outlet, and the dehumidification heat exchanger 41 is arranged close to the air inlet. In the embodiments, the distance between the reheating heat exchanger 42 and the dehumidification heat exchanger 41 is less than or equal to the first preset distance, so that the new air dehumidified by the dehumidification heat exchanger 41 can be warmed by the reheating heat exchanger 42 without flowing through a long path, thereby improving the reheating and dehumidification effect of the air conditioning system. At the same time, it is beneficial to realize the miniaturization of the indoor unit of the air conditioner.

[0061] Optionally, the heat exchange area of the reheating heat exchanger 42 is less than or equal to the heat exchange area of the outdoor heat exchanger 3.

[0062] When the air conditioning system operates in the second reheating and dehumidification new air mode, the refrigerant flowing out of the compressor 1 flows into the reheating heat exchanger 42 through the reheating four-way valve 22, flows into the dehumidification heat exchanger 41 after the first throttling element 403, and then flows back to the compressor 1. At this time, the reheating heat exchanger 42 serves as the only condenser. In the embodiments, the heat exchange area of the reheating heat exchanger 42 is equal to the heat exchange area of the outdoor heat exchanger 3, thereby improving the stability of the air conditioning system when operating in different modes.

[0063] Optionally, the heat exchange area of the dehumidification heat exchanger 41 is greater than or equal to the heat exchange area of the reheating heat exchanger 42.

[0064] When the air conditioning system operates in the first reheating and dehumidification new air mode, the refrigerant of the outdoor heat exchanger 3 flows into the dehumidification heat exchanger 41, and the refrigerant of the reheating heat exchanger 42 also flows into the dehumidification heat exchanger 41. In the embodiments, the heat exchange area of the dehumidification heat exchanger 41 is greater than the heat exchange area of the reheating heat exchanger 42, thereby improving the stability of the air conditioning system when operating in the first reheating and dehumidification new air mode.

[0065] Optionally, the length of the dehumidification heat exchanger 41 is the same as the length of the reheating heat exchanger 42; and / or, the width of the dehumidification heat exchanger 41 is the same as the width of the reheating heat exchanger 42.

[0066] The area of the heat exchanger is the area formed by the length and the width of the heat exchanger. In the embodiments of the present disclosure, the length and the width of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 are the same, so that the area of the two heat exchangers through which the air flows is the same, thereby improving the heat exchange efficiency of the dehumidification heat exchanger 41 and the reheating heat exchanger 42. Optionally, the thickness of the dehumidification heat exchanger 41 is greater than the thickness of the reheating heat exchanger 42.

[0067] Optionally, the reheating dehumidifying fresh air air conditioning system further comprises a first controller. The first controller is configured to control the first flow regulating element 1111 arranged in the first exhaust branch 111 to be opened, and control the second flow regulating element 1121 arranged in the second exhaust branch 112 to be opened, so that the refrigerant discharged by the compressor 1 enters the first exhaust branch 111, enters the outdoor heat exchanger 3 through the system four-way valve 21, is condensed, enters the dehumidifying heat exchanger 41 through the second throttling element 302, and dehumidifies the fresh air flowing through the total heat exchanger 5; the refrigerant discharged by the compressor 1 enters the second exhaust branch 112, flows into the reheating heat exchanger 42 through the reheating four-way valve 22, and heats the dehumidified fresh air, so as to realize the first reheating dehumidifying fresh air mode.

[0068] The first reheating dehumidifying fresh air mode is shown in FIG. 1. Figure 4 The first flow regulating element 1111 arranged in the first exhaust branch 111 is controlled to be opened, and the second flow regulating element 1121 arranged in the second exhaust branch 112 is also controlled to be opened. At this time, the refrigerant discharged by the compressor 1 enters the first exhaust branch 111, enters the outdoor heat exchanger 3 through the system four-way valve 21, is condensed, enters the dehumidifying heat exchanger 41 through the second throttling element 302, and the dehumidifying heat exchanger 41 plays a dehumidifying role at this time; the other refrigerant discharged by the compressor 1 enters the second exhaust branch 112, flows into the reheating heat exchanger 42 through the reheating four-way valve 22, and the reheating heat exchanger 42 acts as a condenser at this time, heats the dehumidified fresh air, and then flows into the dehumidifying heat exchanger 41. Optionally, the opening degree of the first throttling element 403 connected between the dehumidifying heat exchanger 41 and the reheating heat exchanger 42 is adjusted to the maximum opening degree, so that the first throttling element 403 plays the smallest throttling role.

[0069] Optionally, the opening degrees of the first flow regulating element 1111 and the second flow regulating element 1121 can be adjusted according to parameters such as temperature change and humidity change.

[0070] Optionally, the reheating dehumidifying fresh air air conditioning system further comprises a second controller. The second controller is configured to control the first flow regulating element 1111 arranged in the first exhaust branch 111 to be closed, and control the second flow regulating element 1121 arranged in the second exhaust branch 112 to be opened, so that the refrigerant discharged by the compressor 1 enters the second exhaust branch 112, flows into the reheating heat exchanger 42 through the reheating four-way valve 22, and then flows into the dehumidifying heat exchanger 41 after flowing through the first throttling element 403 arranged between the reheating heat exchanger 42 and the dehumidifying heat exchanger 41, and dehumidifies the fresh air flowing through the total heat exchanger 5, so as to realize the second reheating dehumidifying fresh air mode.

[0071] The second reheat dehumidification fresh air mode is provided in the embodiments of the present disclosure. The first flow regulating element 1111 arranged in the first exhaust branch 111 is controlled to be closed, and the second flow regulating element 1121 arranged in the second exhaust branch 112 is controlled to be opened. At this time, the refrigerant discharged by the compressor 1 all enters the second exhaust branch 112, enters the reheat heat exchanger 42 through the reheat four-way valve 22, the reheat heat exchanger 42 functions as a condenser to achieve a reheat effect, the opening degree of the first throttling element 403 is adjusted to be smaller or the opening degree of the first throttling element 403 is adjusted to be minimum, so that the throttled and cooled refrigerant flows into the dehumidification heat exchanger 41 to dehumidify the fresh air.

[0072] It can be seen that, whether in the first reheat dehumidification fresh air mode or in the second reheat dehumidification fresh air mode, in the reheat dehumidification fresh air air conditioning system provided in the present application, the reheat heat exchanger 42 always functions as a condenser, the dehumidification heat exchanger 41 always functions as an evaporator, the flow direction of the refrigerant in the system is specific, and the operation stability of the system is improved.

[0073] The embodiments of the reheat dehumidification fresh air air conditioning system provided in the present application can be applied to the reheat dehumidification fresh air air conditioning system provided in the present application without conflict, and details are not described herein again.

[0074] It can be understood that, without conflict, the embodiments of the reheat dehumidification fresh air air conditioning system described above can be applied to the reheat dehumidification fresh air air conditioning system described herein, and details are not described herein again.

[0075] Optionally, the reheat dehumidification fresh air air conditioning system comprises a compressor 1, a four-way valve assembly, an outdoor heat exchanger 3, and an indoor heat exchange assembly. The compressor 1 comprises an exhaust port 11, a first suction port 12 and a second suction port 12, the exhaust port 11 is provided with a first exhaust branch 111 and a second exhaust branch 112, the first suction port 12 is provided with a first suction branch 121, and the second suction port 12 is provided with a second suction branch 122; the four-way valve assembly comprises a system four-way valve 21 and a reheat four-way valve 22, the system four-way valve 21 is arranged in the first exhaust branch 111 and communicates with the first suction branch 121, and the reheat four-way valve 22 is arranged in the second exhaust branch 112 and communicates with the second suction branch 122; the outdoor heat exchanger 3 is arranged in the first exhaust branch 111; the indoor heat exchange assembly comprises a dehumidification heat exchanger 41 and a reheat heat exchanger 42, one end of the dehumidification heat exchanger 41 communicates with the outdoor heat exchanger 3, and the other end communicates with the system four-way valve 21, one end of the reheat heat exchanger 42 communicates with the reheat four-way valve 22, and the other end communicates with the dehumidification heat exchanger 41. The reheat dehumidification fresh air air conditioning system further comprises a full-effect heat exchanger 5, so that the indoor incoming air first flows through the full-effect heat exchanger 5 to become fresh air and then flows through the indoor heat exchange assembly. As shown in FIG. Figures 6 to 8

[0076] It can be understood that, Figures 1 to 8 ​The upper arrowed dashed line in the arrowed line below the full-effect heat exchanger 5 represents indoor exhaust air, and the lower arrowed solid line represents indoor intake air.

[0077] The fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure includes a compressor 1 having a first suction port 12 and a second suction port 12. The first suction port 12 is provided with a first suction branch 121, and the second suction port 12 is provided with a second suction branch 122. Optionally, the compressor 1 includes a first cylinder and a second cylinder, wherein the first cylinder is in communication with the first suction branch 121, and the second cylinder is in communication with the second suction branch 122. Moreover, an electromagnetic valve is arranged between the first suction branch 121 and the second suction branch 122.

[0078] In this way, when the electromagnetic valve arranged between the two cylinders is opened, the two cylinders are in communication, and when the electromagnetic valve is closed, the two cylinders can be controlled independently.

[0079] The fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure includes a compressor 1 having two cylinders. The opening or closing of the electromagnetic valve can be adjusted according to the needs of system operation, so that the two cylinders of the compressor 1 are in communication or controlled independently.

[0080] Optionally, the reheating four-way valve 22 includes a first end and a second end in communication with the second exhaust branch 112, and a third end in communication with the second suction branch 122, wherein a fourth end 221 of the reheating four-way valve 22 is closed.

[0081] In the embodiments of the present disclosure, the fourth end 221 of the reheating four-way valve 22 is in a normally closed state.

[0082] Optionally, the fresh air reheating dehumidification air conditioning system further includes a first indoor communication pipeline in communication with the dehumidification heat exchanger 41 and the reheating heat exchanger 42, wherein the first indoor communication pipeline includes a first pipe segment 401 in communication with the dehumidification heat exchanger 41, and a second pipe segment 402 in communication with the reheating heat exchanger 42, and the second pipe segment 402 is provided with a first throttling element 403.

[0083] As described above, the first throttling element 403 is arranged between the dehumidification heat exchanger 41 and the reheating heat exchanger 42, and the first throttling element 403 is arranged in the second pipe segment 402. Optionally, the first throttling element 403 can be an electronic expansion valve.

[0084] Optionally, the fresh air reheating dehumidification air conditioning system further includes an online pipe segment 301 in communication between the outdoor heat exchanger 3 and the first indoor communication pipeline, and the online pipe segment 301 is provided with a second throttling element 302, wherein the online pipe segment 301 is in communication with the first pipe segment 401 of the first indoor communication pipeline.

[0085] As described above, the second throttling element 302 is arranged between the outdoor heat exchanger 3 and the first indoor communication pipeline.

[0086] Optionally, the fresh air reheating dehumidification air conditioning system further comprises a first controller, wherein the first controller is configured to control the first flow regulating element 1111 arranged in the first exhaust branch 111 to be opened, and control the second flow regulating element 1121 arranged in the second exhaust branch 112 to be opened, so that the refrigerant discharged by the compressor 1 enters the first exhaust branch 111, enters the outdoor heat exchanger 3 through the system four-way valve 21, condenses, enters the dehumidification heat exchanger 41 through the second throttling element 302, and dehumidifies the fresh air flowing through the total heat exchanger 5; the refrigerant discharged by the compressor 1 enters the second exhaust branch 112, flows into the reheating heat exchanger 42 through the reheating four-way valve 22, and warms the dehumidified fresh air, so as to realize the first reheating dehumidification fresh air mode. Figure 7

[0087] Optionally, when the air conditioning system operates in the first reheating dehumidification fresh air mode, the electromagnetic valve arranged between the two cylinders can be controlled to be opened, so that the two cylinders of the compressor 1 are connected in conduction.

[0088] Optionally, the fresh air reheating dehumidification air conditioning system further comprises a second controller, wherein the second controller is configured to control the first flow regulating element 1111 arranged in the first exhaust branch 111 to be closed, and control the second flow regulating element 1121 arranged in the second exhaust branch 112 to be opened, so that the refrigerant discharged by the compressor 1 enters the second exhaust branch 112, flows into the reheating heat exchanger 42 through the reheating four-way valve 22, and then flows into the dehumidification heat exchanger 41 after flowing through the first throttling element 403 arranged between the reheating heat exchanger 42 and the dehumidification heat exchanger 41, and dehumidifies the fresh air flowing through the total heat exchanger 5, so as to realize the second reheating dehumidification fresh air mode. Figure 8

[0089] Optionally, when the air conditioning system operates in the second reheating dehumidification fresh air mode, the electromagnetic valve arranged between the two cylinders can be controlled to be closed, so that the two cylinders of the compressor 1 are independently controlled.

[0090] ​​The above description and drawings suffice to fully enable one skilled in the art to practice the embodiments of the present disclosure. Other embodiments can include structural and other changes. The embodiments are merely representative of possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Portions and features of some embodiments can be included in, or substituted for, portions and features of other embodiments. The embodiments of the present disclosure are not limited to the structures described above and shown in the drawings, and can be varied in a variety of ways. The scope of the present disclosure is limited only by the claims that follow.

Claims

1. A reheat dehumidifying fresh air conditioning system, characterized in that, Comprise: a compressor comprising a suction port and a discharge port, the discharge port being provided with a first discharge branch and a second discharge branch; a four-way valve assembly comprising a system four-way valve and a reheating four-way valve, the system four-way valve being arranged in the first discharge branch, and the reheating four-way valve being arranged in the second discharge branch; an outdoor heat exchanger in communication with the system four-way valve; an indoor heat exchanger assembly comprising a dehumidification heat exchanger and a reheating heat exchanger, wherein one end of the dehumidification heat exchanger is in communication with the outdoor heat exchanger, and the other end is in communication with the system four-way valve, and one end of the reheating heat exchanger is in communication with the reheating four-way valve, and the other end is in communication with the dehumidification heat exchanger, wherein the reheating dehumidification fresh air air conditioning system further comprises a full-effect heat exchanger, so that the indoor incoming air first flows through the full-effect heat exchanger to become fresh air, and then flows through the indoor heat exchanger assembly.

2. The reheat dehumidifying fresh air conditioning system according to claim 1, wherein, Further comprise: a first indoor communication pipeline in communication between the dehumidification heat exchanger and the reheating heat exchanger, wherein the first indoor communication pipeline comprises a first pipe section in communication with the dehumidification heat exchanger, and a second pipe section in communication with the reheating heat exchanger, and the second pipe section is provided with a first throttling element.

3. The reheat dehumidifying fresh air conditioning system according to claim 1, wherein, Further comprise: an online pipe section in communication between the outdoor heat exchanger and the first indoor communication pipeline, and the online pipe section is provided with a second throttling element, wherein the online pipe section is in communication with the first pipe section of the first indoor communication pipeline.

4. The reheating dehumidification fresh air air conditioning system according to claim 3, wherein the first discharge branch is provided with a first flow regulating element to regulate the amount of refrigerant flowing through the system four-way valve; the second discharge branch is provided with a second flow regulating element to regulate the amount of refrigerant flowing through the reheating four-way valve.

5. The reheating dehumidification fresh air air conditioning system according to claim 1, wherein the spacing between the reheating heat exchanger and the dehumidification heat exchanger is less than or equal to a first predetermined spacing.

6. The reheating dehumidification fresh air air conditioning system according to claim 1, wherein the heat exchange area of the reheating heat exchanger is less than or equal to the heat exchange area of the outdoor heat exchanger.

7. The reheating dehumidification fresh air air conditioning system according to claim 1, wherein the heat exchange area of the dehumidification heat exchanger is greater than or equal to the heat exchange area of the reheating heat exchanger.

8. The reheating dehumidification fresh air air conditioning system according to claim 1, wherein the length of the dehumidification heat exchanger is the same as the length of the reheating heat exchanger; and / or the width of the dehumidification heat exchanger is the same as the width of the reheating heat exchanger.

9. The reheat dehumidifying fresh air conditioning system according to any one of claims 1 to 8, characterized in that, Further comprise a first controller, wherein the first controller is configured to control the first flow regulating element arranged in the first discharge branch to be opened, and at the same time, control the second flow regulating element arranged in the second discharge branch to be opened, so that the refrigerant discharged by the compressor enters the first discharge branch, enters the outdoor heat exchanger through the system four-way valve, condenses, and then enters the dehumidification heat exchanger through the second throttling element to dehumidify the fresh air after flowing through the full-effect heat exchanger; the other part of the refrigerant discharged by the compressor enters the second discharge branch, flows into the reheating heat exchanger through the reheating four-way valve to heat the dehumidified fresh air, so as to realize the first reheating dehumidification fresh air mode.

10. The reheat dehumidifying fresh air conditioning system according to claim 9, wherein, Further comprise a second controller, The second controller is configured to control the first flow regulating element arranged in the first exhaust branch to be closed, and control the second flow regulating element arranged in the second exhaust branch to be opened, so that the refrigerant discharged by the compressor enters the second exhaust branch, flows into the reheating heat exchanger through the reheating four-way valve, and then flows into the dehumidification heat exchanger after passing through the first throttling element arranged between the reheating heat exchanger and the dehumidification heat exchanger, to dehumidify the fresh air passing through the total heat exchanger, so as to realize the second reheating and dehumidification fresh air mode.

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