Fresh air reheating dehumidification air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a fresh air reheating dehumidification 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 communicated with the first air suction branch, and the reheating four-way valve is arranged on the second exhaust branch and communicated with the second air suction 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 fresh air reheating dehumidification 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 fresh air reheating and dehumidification air conditioning system. BACKGROUND

[0002] An air conditioning system can adjust the temperature and humidity of a user's indoor environment. When dehumidification is performed using an air conditioning system, while adjusting the humidity, different users or different weather conditions have different requirements for the temperature during the dehumidification process. 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 while dehumidifying.

[0003] The existing constant temperature dehumidification air conditioner is provided with two heat exchangers in the indoor environment, one heat exchanger is used for dehumidification, and the other heat exchanger is used for reheating the dehumidified air, so as 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 area of the heat exchanger for dehumidification and the heat exchanger for reheating is 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. CONTENT OF THE INVENTION

[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 is it intended to determine key / important components or delineate the scope of protection of these embodiments, but is intended as a prelude to the detailed description below.

[0008] The embodiment of the present disclosure provides a fresh air reheating dehumidification air conditioning system, comprising: a compressor, comprising an exhaust port, a first suction port and a second suction port, the exhaust port is provided with a first exhaust branch and a second exhaust branch, the first suction port is provided with the first exhaust branch, and the second suction port is provided with the 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 is in communication with the first suction branch, and the reheating four-way valve is arranged in the second exhaust branch and is in communication with the second suction 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, and the reheating dehumidification fresh air air conditioning system further comprises a full-effect heat exchanger, so that 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 compressor comprises a first cylinder and a second cylinder, wherein the first cylinder is in communication with the first suction branch, and the second cylinder is in communication with the second suction branch.

[0010] In some optional embodiments, a suction electromagnetic valve is arranged between the first suction branch and the second suction branch.

[0011] In some optional embodiments, the reheating four-way valve comprises a first end and a second end in communication with the second exhaust branch, and a third end in communication with the second suction branch, wherein a fourth end of the reheating four-way valve is closed.

[0012] In some optional embodiments, the fresh air reheating dehumidification air conditioning system further comprises a first indoor communication pipeline in communication with the dehumidification heat exchanger and the reheating heat exchanger, wherein the first indoor communication pipeline comprises a first pipe segment in communication with the dehumidification heat exchanger, and a second pipe segment in communication with the reheating heat exchanger, and the second pipe segment is provided with a first throttling element.

[0013] In some optional embodiments, the fresh air reheating dehumidification air conditioning system further comprises an online pipe segment in communication between the outdoor heat exchanger and the first indoor communication pipeline, and the online pipe segment is provided with a second throttling element, wherein the online pipe segment is in communication with the first pipe segment of the first indoor communication pipeline.

[0014] In some optional embodiments, the first exhaust branch is provided with a first flow regulating element to regulate the amount of refrigerant flowing into 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 into the reheating four-way valve.

[0015] In some optional embodiments, the spacing between the reheating heat exchanger and the dehumidification heat exchanger is less than or equal to a first preset spacing.

[0016] In some optional embodiments, the fresh air reheat dehumidification air conditioning system further comprises a first controller, wherein the first controller is configured to control the first flow regulating element arranged in the first exhaust branch to be opened, 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 first exhaust branch, enters the outdoor heat exchanger through the system four-way valve, condenses, enters the dehumidification heat exchanger through the second throttling element, and dehumidifies the fresh air flowing through the total heat exchanger; the refrigerant discharged by the compressor enters the second exhaust branch, flows into the reheat heat exchanger through the reheat four-way valve, and dehumidifies the fresh air flowing through the total heat exchanger, to realize the first reheat dehumidification fresh air mode.

[0017] In some optional embodiments, the fresh air reheat dehumidification air conditioning system further comprises a second controller, wherein 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 reheat heat exchanger through the reheat four-way valve, and then flows into the dehumidification heat exchanger through the first throttling element arranged between the reheat heat exchanger and the dehumidification heat exchanger, and dehumidifies the fresh air flowing through the total heat exchanger, to realize the second reheat dehumidification fresh air mode.

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

[0019] Optionally, the fresh air reheat dehumidification air conditioning system comprises a compressor, a four-way valve assembly, an outdoor heat exchanger, and an indoor heat exchange assembly. The compressor comprises an exhaust port, a first suction port, and a second suction port, the exhaust port is provided with a first exhaust branch and a second exhaust branch, the first suction port is provided with a first suction branch, and the second suction port is provided with a second suction branch; the four-way valve assembly comprises a system four-way valve and a reheat four-way valve, the system four-way valve is arranged in the first exhaust branch and communicates with the first suction branch, and the reheat four-way valve is arranged in the second exhaust branch and communicates with the second suction branch; the outdoor heat exchanger communicates with the system four-way valve; the indoor heat exchange assembly comprises a dehumidification heat exchanger and a reheat heat exchanger, one end of the dehumidification heat exchanger communicates with the outdoor heat exchanger, the other end communicates with the system four-way valve, one end of the reheat heat exchanger communicates with the reheat four-way valve, and the other end communicates with the dehumidification heat exchanger. The reheat dehumidification fresh air air conditioning system further comprises a total heat exchanger, so that the indoor inlet air first flows through the total heat exchanger to become fresh air, and then flows through the indoor heat exchange assembly.

[0020] The fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure is provided with a full-effect heat exchanger, the fresh air in and out is exchanged by the full-effect heat exchanger, the heat or cold of the air discharged to the outside is ensured to be absorbed by the indoor air, the function of recovering the energy of the indoor air is undertaken, at the same time, the dehumidification heat exchanger and the reheating heat exchanger are arranged, so that the air conditioning system realizes constant temperature dehumidification.

[0021] The foregoing general description and the following description are only exemplary and explanatory, and are not used to limit the present application. BRIEF DESCRIPTION OF DRAWINGS

[0022] One or more embodiments are exemplarily illustrated by corresponding drawings, the exemplarily illustrations and the drawings do not constitute limitation on the embodiments, the elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0023] Figure 1 is a schematic diagram of a reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure;

[0024] Figure 2 is a partial schematic diagram of a reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure;

[0025] Figure 3 is a schematic diagram of another reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure;

[0026] Figure 4 is a refrigerant flow schematic diagram of a reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure in a first reheating dehumidification fresh air mode;

[0027] Figure 5 is a refrigerant flow schematic diagram of a reheating dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure in a second reheating dehumidification fresh air mode;

[0028] Figure 6 is a schematic diagram of a fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure;

[0029] Figure 7 is a refrigerant flow schematic diagram of a fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure in a first reheating dehumidification fresh air mode;

[0030] Figure 8 is a refrigerant flow schematic diagram of a fresh air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure in a second reheating dehumidification fresh air mode.

[0031] Reference signs:

[0032] 1: compressor; 11: exhaust port; 111: first exhaust branch; 112: second exhaust 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: reheat four-way valve; 221: fourth port;

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

[0035] 41: dehumidification heat exchanger; 42: reheat 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 is described in detail below, and the attached drawings 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, through multiple details, a sufficient understanding of the disclosed embodiments is provided. However, one or more embodiments can still be implemented without these details. In other cases, in order to simplify the drawings, well-known structures and devices can be simplified.

[0038] The terms "first", "second", and the like in the specification and claims of the embodiments of the present disclosure and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily have to be used 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. 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. Also, in addition to indicating the orientation or positional relationship, the above-mentioned terms can also be used to indicate other meanings, for example, the term "upper" can also be used to indicate a certain attachment relationship or connection relationship in some cases. For those skilled 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", and "fixed" should be understood broadly. For example, "connected" can be fixed connection, detachable connection, or integral configuration; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection via an intermediate medium, or internal communication between two devices, elements, or components. Those of ordinary skill in the art can understand the specific meaning of the above terms in the embodiments of the present disclosure according to the specific circumstances.

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

[0042] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B means A or B.

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

[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 embodiments of the present disclosure provide a reheating dehumidification fresh air air conditioning system, which can also be called a fresh air reheating dehumidification air conditioning system, as shown in Figures 1 to 5

[0046] Optionally, the reheating 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 reheating four-way valve 22, the system four-way valve 21 is arranged in the first discharge branch 111, and the reheating 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 reheating 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 reheating heat exchanger 42 is in communication with the reheating four-way valve 22, and the other end is in communication with the dehumidification heat exchanger 41. The reheating 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, and then flows through the indoor heat exchange assembly.

[0047] ​The reheat dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure comprises a compressor 1, a four-way valve assembly, an outdoor heat exchanger 3 and an indoor heat exchange assembly. The indoor heat exchange assembly comprises a dehumidification heat exchanger 41 and a reheat heat exchanger 42, which are used for dehumidification and reheat respectively. Meanwhile, the reheat dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure 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 after heat recovery, and then flows through the indoor heat exchange assembly for 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] Meanwhile, in the reheat dehumidification fresh air air conditioning system provided by the embodiments of the present disclosure, the refrigerant in the reheat heat exchanger 42 for reheat is from the second exhaust branch 112 provided with a reheat four-way valve 22, and the refrigerant in the dehumidification heat exchanger 41 for dehumidification is from the first exhaust branch 111 provided with a 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 refrigerant amount in the first exhaust branch 111 and the second exhaust branch 112.

[0049] Optionally, the first exhaust branch 111 is provided with a first flow adjusting element 1111 to adjust the refrigerant amount flowing through the system four-way valve 21, and the second exhaust branch 112 is provided with a second flow adjusting element 1121 to adjust the refrigerant amount flowing through the reheat four-way valve 22. Figure 3

[0050] For example, when the air conditioning system operates in the 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 in the dehumidification process. At this time, the refrigerant amount in the second exhaust branch 112 can be increased, the refrigerant amount entering the reheat heat exchanger 42 can be increased, and the refrigerant amount in the first exhaust branch 111 can be reduced, and the refrigerant amount entering the dehumidification heat exchanger 41 can be reduced, so as to increase the indoor temperature of the user.

[0051] ​Or, when the air conditioning system runs the dehumidification mode, first enters the temperature rising stage, adjusts the opening of the second flow regulating element 1121, adjusts the opening of the first flow regulating element 1111, and makes the opening of the second flow element greater than the opening of the first flow regulating element 1111. Thus, in the temperature rising stage, the user's indoor temperature is appropriately raised, for example, by 2-5℃, through the reheating heat exchanger 42, which 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 greater than or equal to the opening of the second flow regulating element 1121, which mainly makes the dehumidification heat exchanger 41 quickly play the dehumidification function and 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 less 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 operated. For example, when the humidity is reduced by 10% in the rapid dehumidification stage, at this time, it can be detected whether the indoor temperature needs to be compensated, and if so, the temperature compensation stage is operated 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 As shown.

[0055] In the embodiment of the present disclosure, the first indoor communication pipeline, which is in communication with the dehumidification heat exchanger 41 and the reheating heat exchanger 42, is provided with a first throttling element 403, and the first throttling element 403 is arranged in the second pipe segment 402 which is 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 the refrigerant flows into the dehumidification heat exchanger 41. Optionally, the first throttling element 403 can be an electronic expansion valve.

[0056] Optionally, the second pipe segment 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 and dehumidification fresh air air conditioning system further comprises an online pipe segment 301 which is 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.

[0058] The online pipe segment 301 which is 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 segment 301 is in communication with the first pipe segment 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 embodiment 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 embodiment, the distance between the reheating heat exchanger 42 and the dehumidification heat exchanger 41 is less than or equal to a first preset distance, so that the fresh 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 the second reheating dehumidification fresh 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 passing through the first throttling element 403, and flows back to the compressor 1. At this time, the reheating heat exchanger 42 serves as the only condenser. In the embodiment, the heat exchange area of the reheating heat exchanger 42 is equal to the heat exchange area of the outdoor heat exchanger 3, which improves the stability of the air conditioning system 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 the first reheating dehumidification fresh 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 embodiment, the heat exchange area of the dehumidification heat exchanger 41 is greater than the heat exchange area of the reheating heat exchanger 42, which improves the stability of the air conditioning system operating in the first reheating dehumidification fresh 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 formed by the length and the width of the heat exchanger. In the embodiment, the length and the width of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 are the same, so that the areas of the two heat exchangers through which the air flows are the same, which improves 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 dehumidification 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 from the compressor 1 enters the first exhaust branch 111, enters the outdoor heat exchanger 3 through the system four-way valve 21, is condensed and 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 from 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 dehumidification fresh air mode.

[0068] The embodiment provides a first reheating dehumidification fresh air mode, as shown in Figure 4The 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 in the outdoor heat exchanger 3, enters the dehumidification heat exchanger 41 through the second throttling element 302, and the dehumidification heat exchanger 41 functions as a dehumidifier at this time; the other part of 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 the reheating heat exchanger 42 functions as a condenser at this time to heat the dehumidified fresh air, and then the fresh air flows into the dehumidification heat exchanger 41. Alternatively, the opening degree of the first throttling element 403 connected between the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is adjusted to the maximum opening degree, so that the first throttling element 403 functions as a minimum throttling element.

[0069] Alternatively, 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] Alternatively, the reheating and dehumidifying fresh 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 dehumidification heat exchanger 41 through the first throttling element 403 arranged between the reheating heat exchanger 42 and the dehumidification heat exchanger 41, so as to realize the second reheating and dehumidifying fresh air mode.

[0071] The second reheating and dehumidifying 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 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 functions as a condenser to realize the reheating 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 the minimum, so that the first throttling element 403 functions as a throttling element, and the refrigerant after throttling and cooling flows into the dehumidification heat exchanger 41 to dehumidify the fresh air.

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

[0073] The new air reheating dehumidification air conditioning system is also provided by the embodiments of the present disclosure.

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

[0075] Optionally, the new air reheating dehumidification 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. 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 reheating four-way valve 22. The system four-way valve 21 is arranged in the first exhaust branch 111 and is in communication with the first suction branch 121. The reheating four-way valve 22 is arranged in the second exhaust branch 112 and is in communication 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 reheating heat exchanger 42. One end of the dehumidification heat exchanger 41 is in communication with the outdoor heat exchanger 3, and the other end is in communication with the system four-way valve 21. One end of the reheating heat exchanger 42 is in communication with the reheating four-way valve 22, and the other end is in communication with the dehumidification heat exchanger 41. The reheating dehumidification fresh 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 In the full-effect heat exchanger 5, the upper arrowed dashed line represents indoor exhaust air, and the lower arrowed solid line represents indoor incoming air.

[0077] In the new air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure, the compressor 1 comprises 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 comprises a first cylinder and a second cylinder. 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. 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 connected in parallel. When the electromagnetic valve is closed, the two cylinders can be controlled independently.

[0079] ​The new air reheating dehumidification air conditioning system provided by the embodiments of the present disclosure is provided with two cylinders of the compressor 1. 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 connected or independently controlled.

[0080] Optionally, the reheating four-way valve 22 comprises a first end and a second end connected to the second exhaust branch 112, and a third end connected to the second suction branch 122, wherein the 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 new air reheating dehumidification air conditioning system further comprises a first indoor communication pipeline connected to the dehumidification heat exchanger 41 and the reheating heat exchanger 42, wherein the first indoor communication pipeline comprises a first pipe section 401 connected to the dehumidification heat exchanger 41, and a second pipe section 402 connected to the reheating heat exchanger 42, and the second pipe section 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 section 402. Optionally, the first throttling element 403 can be an electronic expansion valve.

[0084] Optionally, the new air reheating dehumidification air conditioning system further comprises an online pipe section 301 connected 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 connected to the first pipe section 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. Optionally, the second throttling element 302 can be an electronic expansion valve.

[0086] Optionally, the new 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, is condensed through the second throttling element 302, enters the dehumidification heat exchanger 41, and dehumidifies the new air flowing through the total heat exchanger 5; the other way of 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 new air, so as to realize the first reheating dehumidification new air mode. Figure 7 As shown in the figure.

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

[0088] Optionally, the fresh air reheating dehumidifying 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 close, and control the second flow regulating element 1121 arranged in the second exhaust branch 112 to open, 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 passing through the first throttling element 403 arranged between the reheating heat exchanger 42 and the dehumidifying heat exchanger 41, to dehumidify the fresh air passing through the total heat exchanger 5, so as to realize the second reheating dehumidifying fresh air mode. Figure 8

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

[0090] The above description and drawings sufficiently illustrate the embodiments of the present disclosure to enable one skilled in the art to practice them. Other embodiments can include structural and other changes. The embodiments are merely representative of the possible variations. Individual components and functions are optional unless explicitly required, and the order of operations can be varied. Parts and features of some embodiments can be included or replace parts 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 various modifications and changes can be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.​

Claims

1. A fresh air reheat dehumidifying air conditioning system, characterized in that, The new air heat-recovery dehumidification air conditioning system comprises a compressor, a four-way valve assembly, an outdoor heat exchanger, and an indoor heat exchanger assembly. The compressor comprises an exhaust port, a first suction port, and a second suction port. The exhaust port is provided with a first exhaust branch and a second exhaust branch. The first suction port is provided with the first exhaust branch. The second suction port is provided with the second exhaust branch. The four-way valve assembly comprises a system four-way valve and a heat-recovery four-way valve. The system four-way valve is arranged in the first exhaust branch and is in communication with the first suction port. The heat-recovery four-way valve is arranged in the second exhaust branch and is in communication with the second suction port. The outdoor heat exchanger is in communication with the system four-way valve. The indoor heat exchanger assembly comprises a dehumidification heat exchanger and a heat-recovery heat exchanger. One end of the dehumidification heat exchanger is in communication with the outdoor heat exchanger. The other end of the dehumidification heat exchanger is in communication with the system four-way valve. One end of the heat-recovery heat exchanger is in communication with the heat-recovery four-way valve. The other end of the heat-recovery heat exchanger is in communication with the dehumidification heat exchanger.

5. The fresh air reheat dehumidifying air conditioning system according to claim 1, characterized in that, The new air heat-recovery dehumidification air conditioning system further comprises a full-effect heat exchanger. The indoor air first flows through the full-effect heat exchanger to become new air and then flows through the indoor heat exchanger assembly.

2. The new air heat-recovery dehumidification air conditioning system according to claim 1, wherein the compressor comprises a first cylinder and a second cylinder.

6. The fresh air reheat dehumidifying air conditioning system according to claim 1, wherein, The first cylinder is in communication with the first suction port. The second cylinder is in communication with the second suction port.

3. The new air heat-recovery dehumidification air conditioning system according to claim 2, wherein a suction electromagnetic valve is arranged between the first suction port and the second suction port.

4. The new air heat-recovery dehumidification air conditioning system according to claim 1, wherein the heat-recovery four-way valve comprises a first end in communication with the second exhaust branch, a second end in communication with the second exhaust branch, and a third end in communication with the second suction port. The fourth end of the heat-recovery four-way valve is closed. The new air heat-recovery dehumidification air conditioning system further comprises a first indoor communication pipeline. The first indoor communication pipeline is in communication with the dehumidification heat exchanger and the heat-recovery heat exchanger. The first indoor communication pipeline comprises a first pipe segment in communication with the dehumidification heat exchanger and a second pipe segment in communication with the heat-recovery heat exchanger.

9. The fresh air reheat dehumidifying air conditioning system according to any one of claims 1 to 8, characterized in that, The second pipe segment is provided with a first throttling element. The new air heat-recovery dehumidification air conditioning system further comprises an online pipe segment. The online pipe segment is in communication between the outdoor heat exchanger and the first indoor communication pipeline. The online pipe segment is provided with a second throttling element. The online pipe segment is in communication with the first pipe segment of the first indoor communication pipeline.

7. The new air heat-recovery dehumidification air conditioning system according to claim 1, wherein the first exhaust branch is provided with a first flow regulating element to regulate the amount of refrigerant flowing into the system four-way valve. The second exhaust branch is provided with a second flow regulating element to regulate the amount of refrigerant flowing into the heat-recovery four-way valve.

8. The new air heat-recovery dehumidification air conditioning system according to claim 1, wherein the distance between the heat-recovery heat exchanger and the dehumidification heat exchanger is less than or equal to a first preset distance. The new air heat-recovery dehumidification air conditioning system further comprises a first controller. The first controller is in communication with the compressor, the four-way valve assembly, the outdoor heat exchanger, and the indoor heat exchanger assembly. The first controller is configured to control the first flow regulating element arranged in the first exhaust branch to be opened, 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 first exhaust branch and enters the outdoor heat exchanger through the system four-way valve, is condensed and enters the dehumidification heat exchanger through the second throttling element, and dehumidifies the fresh air flowing through the total heat exchanger; the refrigerant discharged by the compressor enters the second exhaust branch and flows into the reheating heat exchanger through the reheating four-way valve, and heats the dehumidified fresh air, so as to realize the first reheating and dehumidification fresh air mode.

10. The fresh air reheat dehumidifying air conditioning system according to claim 9, characterized in that, The second controller is further 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 flowing through the first throttling element arranged between the reheating heat exchanger and the dehumidification heat exchanger, and dehumidifies the fresh air flowing through the total heat exchanger, so as to realize the second reheating and dehumidification fresh air mode. The second controller is further 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 flowing through the first throttling element arranged between the reheating heat exchanger and the dehumidification heat exchanger, and dehumidifies the fresh air flowing through the total heat exchanger, so as to realize the second reheating and dehumidification fresh air mode.

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