Constant-temperature dehumidification air conditioning system

Abstract

The utility model relates to the technical field of air conditioners, and discloses a constant-temperature dehumidification air conditioning system which comprises a compressor, a first dehumidification unit, a second dehumidification unit, a third dehumidification unit, a fourth dehumidification unit, a fifth dehumidification unit and a sixth dehumidification unit, the compressor comprises an air suction port and an air exhaust port, and the air suction port is provided with a first air suction branch and a second air suction branch; the system four-way valve is arranged on the first exhaust branch and the first air suction branch in a communicating manner; the reheating multi-way valve is arranged on the second exhaust branch and the second air suction branch in a communicating mode; 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 multi-way valve, and the other end of the reheating heat exchanger communicates with the dehumidification heat exchanger; a communicating electromagnetic valve is arranged between the first air suction branch and the second air suction branch. According to the air conditioning system, the indoor temperature is controlled while the indoor humidity is adjusted.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of air conditioners, for example to a constant-temperature dehumidification air conditioning system. BACKGROUND

[0002] With the increasing popularity of air conditioners, different user groups have different requirements for the outlet air temperature of the indoor unit under different climate conditions. For example, in the plum rain season in the south, although the indoor temperature is not high, the environmental humidity is high. At this time, the humidity is often reduced by dehumidification of the air conditioner. However, the outlet air temperature of the indoor unit of the conventional air conditioning system is often low when dehumidifying, resulting in poor comfort.

[0003] The existing air conditioning system has two heat exchangers in the indoor unit to achieve the effects of dehumidification and temperature regulation. One heat exchanger is used for dehumidification, and the other heat exchanger 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 air conditioning system has two heat exchangers in the indoor unit to achieve the effects of dehumidification and temperature regulation. One heat exchanger is used for dehumidification, and the other heat exchanger is used for reheating the dehumidified air to achieve the purpose of 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 CONTENTS

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

[0008] The present disclosure provides a constant-temperature dehumidification air conditioning system, comprising: a compressor comprising a suction port and an exhaust port, the suction port being provided with a first suction branch and a second suction branch, and the exhaust port being provided with a first exhaust branch and a second exhaust branch; a system four-way valve being connected and communicated with the first exhaust branch and the first suction branch; a reheating multi-way valve being connected and communicated with the second exhaust branch and the second suction branch; an outdoor heat exchanger being connected and communicated 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 connected and communicated with the outdoor heat exchanger, the other end is connected and communicated with the system four-way valve, one end of the reheating heat exchanger is connected and communicated with the reheating multi-way valve, and the other end is connected and communicated with the dehumidification heat exchanger, and a communication electromagnetic valve is arranged between the first suction branch and the second suction branch.

[0009] In some optional embodiments, the compressor includes a first cylinder and a second cylinder, wherein the first cylinder is connected to the first suction branch, and the second cylinder is connected to the second suction branch.

[0010] In some optional embodiments, a first indoor connecting pipe is provided between the dehumidification heat exchanger and the reheat heat exchanger, and the first indoor connecting pipe includes a first pipe section connected to the dehumidification heat exchanger, and a second pipe section connected to the reheat heat exchanger, wherein the first pipe section is provided with a second throttling element, and the second pipe section is provided with a first throttling element.

[0011] In some optional embodiments, the constant temperature dehumidification air conditioning system also includes: an online pipe section, connected between the outdoor heat exchanger and the first indoor connecting pipe, and the online pipe section is provided with a third throttling element, wherein the online pipe section is connected to the pipe section between the first throttling element and the second throttling element of the first indoor connecting pipe.

[0012] In some optional embodiments, the dehumidification heat exchanger includes a first refrigerant inlet and outlet connected to the first pipe section, wherein a discrete element is provided between the first refrigerant inlet and outlet and the second throttling element for breaking up and mixing the refrigerant before flowing into the dehumidification heat exchanger.

[0013] In some optional embodiments, the discrete elements include filters.

[0014] 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; the second exhaust branch is provided with a second flow regulating element to regulate the amount of refrigerant flowing through the reheat multi-way valve.

[0015] In some optional embodiments, the constant temperature dehumidification air conditioning system also includes: a first controller, configured to control the reheat multi-way valve to open the second exhaust branch, so that the refrigerant discharged from the compressor enters the first exhaust branch in one way, enters the outdoor heat exchanger through the system four-way valve, and after condensation, enters the dehumidification heat exchanger through the second throttling element for dehumidification; the refrigerant discharged from the compressor enters the second exhaust branch in another way, flows into the reheat heat exchanger through the reheat multi-way valve, and heats the dehumidified air to achieve the reheat dehumidification mode.

[0016] In some optional embodiments, the constant temperature dehumidification air conditioning system also includes: a second controller, configured to control the reheat multi-way valve to block the second exhaust branch and open the second intake branch, so that the refrigerant discharged from the compressor enters the first exhaust branch, and after condensation by the outdoor heat exchanger, flows into the dehumidification heat exchanger and the reheat heat exchanger respectively, and then flows back to the compressor through the first intake branch and the second intake branch respectively, to achieve cooling or dehumidification mode.

[0017] In some optional embodiments, the constant-temperature dehumidification air conditioning system further comprises a third controller configured to control the reheat multi-way valve to conduct the second exhaust branch, and adjust the opening degrees of the first throttling element and the second throttling element arranged between the reheat heat exchanger and the dehumidification heat exchanger to the maximum opening degrees, so that the refrigerant discharged by the compressor enters the first exhaust branch and the second exhaust branch, enters the dehumidification heat exchanger through the system four-way valve, enters the reheat heat exchanger through the reheat multi-way valve, and the refrigerant flowing out of the dehumidification heat exchanger and the reheat heat exchanger flows back to the compressor through the outdoor heat exchanger, to realize the heating mode.

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

[0019] The constant-temperature dehumidification air conditioning system provided by the embodiments of the present disclosure comprises a compressor, a system four-way valve, a reheat multi-way valve, an outdoor heat exchanger and an indoor heat exchange assembly. The suction port of the compressor is provided with a first suction branch and a second suction branch, and the exhaust port is provided with a first exhaust branch and a second exhaust branch. The system four-way valve is communicated between the first suction branch and the first exhaust branch, and the reheat multi-way valve is communicated between the second suction branch and the second exhaust branch. The indoor heat exchange assembly comprises a dehumidification heat exchanger and a reheat heat exchanger. Moreover, a communication electromagnetic valve is arranged between the first suction branch and the second suction branch of the compressor.

[0020] When the constant-temperature dehumidification air conditioning system operates in the constant-temperature dehumidification mode, part of the refrigerant of the compressor can enter the outdoor heat exchanger through the first exhaust branch, and then enter the dehumidification heat exchanger to dehumidify; another part of the refrigerant can enter the reheat heat exchanger through the second exhaust branch to reheat the dehumidified air. In this way, the heat exchange capacity of the dehumidification heat exchanger and the reheat heat exchanger can be adjusted by adjusting the amount of refrigerant entering different branches, so that the adjusted temperature and humidity are more in line with the requirements of users, constant-temperature dehumidification is realized, and even temperature-increasing dehumidification is realized.

[0021] Meanwhile, the communication electromagnetic valve arranged between the first suction branch and the second suction branch of the compressor can adjust the conduction state of the first suction branch and the second suction branch through the communication electromagnetic valve.

[0022] 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

[0023] One or more embodiments are exemplarily illustrated by corresponding drawings, which do not constitute limitation on the embodiments, and elements with the same reference numerals in the drawings are shown as similar elements, the drawings do not constitute proportional limitation, and wherein:

[0024] Figure 1 is a schematic diagram of an air conditioning system provided by the embodiments of the present disclosure;

[0025] Figure 2 is a partial schematic view of an air conditioning system provided by an embodiment of the present disclosure;

[0026] Figure 3 is a schematic view of another air conditioning system provided by an embodiment of the present disclosure;

[0027] Figure 4 is a refrigerant flow schematic view of an air conditioning system provided by an embodiment of the present disclosure;

[0028] Figure 5 is a refrigerant flow schematic view of another air conditioning system provided by an embodiment of the present disclosure;

[0029] Figure 6 is a refrigerant flow schematic view of another air conditioning system provided by an embodiment of the present disclosure;

[0030] Figure 7 is a schematic view of an air conditioning system provided by an embodiment of the present disclosure;

[0031] Figure 8 is a refrigerant flow schematic view of another air conditioning system provided by an embodiment of the present disclosure;

[0032] Figure 9 is a refrigerant flow schematic view of another air conditioning system provided by an embodiment of the present disclosure;

[0033] Figure 10 is a refrigerant flow schematic view of another air conditioning system provided by an embodiment of the present disclosure.

[0034] Reference signs:

[0035] 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: communication electromagnetic valve; 1111: first flow regulating element; 1121: second flow regulating element; 1201: first cylinder; 1202: second cylinder;

[0036] 21: system four-way valve; 22: reheating multi-way valve;

[0037] 3: outdoor heat exchanger; 301: on-line pipe section; 302: third throttling element;

[0038] 41: dehumidification heat exchanger; 42: reheating heat exchanger; 401: first pipe section; 402: second pipe section; 403: first throttling element; 404: second throttling element. DETAILED DESCRIPTION

[0039] 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 with reference to the accompanying 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.

[0040] 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.

[0041] 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.

[0042] 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.

[0043] Unless otherwise specified, the term "a plurality of" means two or more.

[0044] In the embodiments of the present disclosure, the character " / " represents an "or" relationship between the preceding and following objects. For example, A / B represents: A or B.

[0045] 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.

[0046] 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.

[0047] The present disclosure provides an air conditioning system.

[0048] Optionally, the air conditioning system comprises a compressor 1, a system four-way valve 21, a reheating multi-way valve 22, an outdoor heat exchanger 3 and an indoor heat exchange assembly. The compressor 1 comprises a suction port 12 and a discharge port 11, the suction port 12 is provided with a first suction branch 121 and a second suction branch 122, and the discharge port 11 is provided with a first discharge branch 111 and a second discharge branch 112; the system four-way valve 21 is connected and communicated between the first discharge branch 111 and the first suction branch 121; the reheating multi-way valve 22 is connected and communicated between the second discharge branch 112 and the second suction branch 122; the outdoor heat exchanger 3 is connected and communicated 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 connected and communicated with the outdoor heat exchanger 3, the other end is connected and communicated with the system four-way valve 21, one end of the reheating heat exchanger 42 is connected and communicated with the reheating multi-way valve 22, and the other end is connected and communicated with the dehumidification heat exchanger 41. Wherein, a first indoor communication pipeline is arranged between the dehumidification heat exchanger 41 and the reheating heat exchanger 42, and the first indoor communication pipeline is provided with a first throttling element 403. As shown in Figures 1 to 6 .

[0049] The present disclosure provides an air conditioning system, and the indoor heat exchange assembly comprises a dehumidification heat exchanger 41 and a reheating heat exchanger 42 to perform dehumidification and reheating respectively. The refrigerant in the reheating heat exchanger 42 for reheating function comes from the second discharge branch 112 provided with the reheating multi-way valve 22, and the refrigerant in the dehumidification heat exchanger 41 for dehumidification function comes from the first discharge branch 111 provided with the system four-way valve 21. In this way, by adjusting the amount of refrigerant in the first discharge branch 111 and the second discharge branch 112 respectively, the heat exchange capacity of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 can be adjusted, and the temperature in the dehumidification process is adjusted, realizing constant temperature dehumidification or temperature increasing dehumidification.

[0050] Optionally, the reheating multi-way valve 22 comprises a three-way valve, a four-way valve or other multi-way valve body components. The reheating multi-way valve can selectively conduct or block the second discharge branch or the second suction branch.

[0051] In the present disclosure, the first indoor communication pipeline connected between the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is provided with a first throttling element 403. 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 improved before flowing into the dehumidification heat exchanger 41. Optionally, the first throttling element 403 can be an electronic expansion valve. AsFigure 2 As shown.

[0052] Optionally, the distance between the reheating heat exchanger 42 and the dehumidification heat exchanger 41 is less than or equal to the first preset distance.

[0053] 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.

[0054] 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.

[0055] 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.

[0056] When the air conditioning system operates in the constant temperature dehumidification 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 operation stability of the air conditioning system.

[0057] 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.

[0058] 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.

[0059] Optionally, the first indoor communication pipeline includes a first pipe segment 401 connected with the dehumidification heat exchanger 41, and a second pipe segment 402 connected with the reheating heat exchanger 42, wherein a first throttling element 403 is arranged in the second pipe segment 402. As shown. Figure 2

[0060] ​In this embodiment, the first throttling element 403 is arranged in the second pipe section 402 which is directly communicated with the reheating heat exchanger 42. Optionally, the first throttling element 403 can be an electronic expansion valve.

[0061] Optionally, the air conditioning system further comprises an on-line pipe section 301 which is communicated between the outdoor heat exchanger 3 and the first indoor communication pipe, and the on-line pipe section 301 is provided with a third throttling element 302, wherein the on-line pipe section 301 is communicated with the first pipe section 401 of the first indoor communication pipe. As Figure 2 shown.

[0062] The on-line pipe section 301 which is communicated between the outdoor heat exchanger 3 and the first indoor communication pipe is provided with the third throttling element 302, and the on-line pipe section 301 is communicated with the first pipe section 401 of the first indoor communication pipe, 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 third throttling element 302. Optionally, the third throttling element 302 can be an electronic expansion valve.

[0063] Optionally, the second pipe section 402 is provided with a discrete element for dispersing and mixing the refrigerant before flowing into the dehumidification heat exchanger 41. The discrete element includes a filter screen.

[0064] When the dehumidification heat exchanger 41 serves as an evaporator, the refrigerant entering the dehumidification heat exchanger 41 is usually in a gas-liquid mixed state. In the embodiment of the present disclosure, the second pipe section 402 is provided with a discrete element, which improves the gas-liquid mixing degree of the refrigerant in the gas-liquid mixed state, and further improves the stability of the heat exchange capacity of the dehumidification heat exchanger 41.

[0065] Optionally, the dehumidification heat exchanger 41 comprises a first refrigerant inlet and outlet which is communicated with the first pipe section 401, wherein the distance between the discrete element and the first refrigerant inlet and outlet is greater than or equal to a first preset distance.

[0066] Optionally, the first preset distance is greater than or equal to 30 mm.

[0067] Optionally, the first exhaust branch 111 is provided with a first flow adjusting element 111 to adjust the amount of refrigerant 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 amount of refrigerant flowing through the reheating multi-way valve 22. As Figure 3 shown.

[0068] For example, when the air-conditioning system is running in the dehumidification process, the user's current indoor temperature is 3°C or even more lower than the initial indoor temperature. It is considered that the user's indoor temperature has decreased 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 reheat 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 that the user's indoor temperature increases.

[0069] Alternatively, when the air-conditioning system operates in dehumidification mode, it first enters the heating stage, increases the opening of the second flow regulating element 1121, and decreases the opening of the first flow regulating element 1111, so that the opening of the second flow regulating element is greater than the opening of the first flow regulating element 1111. In this way, in the heating stage, the user's indoor temperature is first appropriately heated by the reheat heat exchanger 42, for example, by 2-5°C. At this time, the increased temperature can provide a certain temperature storage for the subsequent rapid dehumidification process; secondly, it enters the rapid dehumidification stage, adjusts 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. This process mainly enables the dehumidification heat exchanger 41 to quickly perform the dehumidification function and quickly adjust the user's indoor humidity; finally, it enters the temperature compensation stage. After the rapid dehumidification stage is completed, if the current indoor temperature is lower than the initial temperature, the opening of the first flow regulating element 1111 is adjusted to be less than the opening of the second flow regulating element 1121, so that the reheat heat exchanger 42 compensates for the user's indoor temperature.

[0070] Optionally, the rapid dehumidification phase and the temperature compensation phase are alternated. In the embodiments of the present disclosure, the refrigerant flow direction remains unchanged during the rapid dehumidification and temperature compensation phases. This allows for a stable alternation of the rapid dehumidification and temperature compensation phases. For example, when the rapid dehumidification phase reduces humidity by 10%, it is possible to detect whether indoor temperature compensation is required. If so, the temperature compensation phase is then executed to improve temperature control during the dehumidification process.

[0071] Optionally, the air-conditioning system also includes a first controller, which is configured to control the reheat multi-way valve 22 to open the second exhaust branch 112, so that the refrigerant discharged from the compressor 1 enters the first exhaust branch 111 through one path, enters the outdoor heat exchanger 3 through the system four-way valve 21, and after condensation, enters the dehumidification heat exchanger 41 through the third throttling element 302 for dehumidification; the refrigerant discharged from the compressor 1 enters the second exhaust branch 112 through another path, flows into the reheat heat exchanger 42 through the reheat multi-way valve 22, and heats the dehumidified wind to realize the reheat dehumidification mode.

[0072] The air conditioning system can run a reheating dehumidification mode, a constant temperature dehumidification mode or a temperature increasing dehumidification mode. The reheating multi-way valve 22 is controlled to conduct the second exhaust branch 112, and the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 enters the outdoor heat exchanger 3 through the first exhaust branch 111, then flows into the dehumidification heat exchanger 41 to perform dehumidification, and the other part of the gaseous refrigerant enters the reheating heat exchanger 42 to heat the dehumidified air. The opening degree of the first flow regulating element 111 and the second flow regulating element 1121 can be adjusted to adjust the amount of refrigerant in the dehumidification heat exchanger 41 and the reheating heat exchanger 42, and then the heat exchange capacity of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is adjusted, so that the reheating dehumidification, the constant temperature dehumidification or the temperature increasing dehumidification is realized. As shown in Figure 4 .

[0073] Optionally, when the air conditioning system runs in the constant temperature dehumidification mode or the temperature increasing dehumidification mode, the opening degree of the first throttling element 403 can be adjusted to the maximum.

[0074] Optionally, the air conditioning system further comprises a second controller configured to control the reheating multi-way valve 22 to block the second exhaust branch 112 and conduct the second suction branch 122, so that the refrigerant discharged from the compressor 1 enters the first exhaust branch 111, and after the condensation of the outdoor heat exchanger 3, the refrigerant flows into the dehumidification heat exchanger 41 and the reheating heat exchanger 42 respectively, and then flows back to the compressor 1 through the first suction branch 121 and the second suction branch 122 respectively, so as to realize the refrigeration or dehumidification mode. As shown in Figure 5 .

[0075] When the air conditioning system runs in the refrigeration or dehumidification mode, the dehumidification heat exchanger 41 and the reheating heat exchanger 42 both act as evaporators to dehumidify or refrigerate. Optionally, when the air conditioning system runs in the refrigeration or dehumidification mode, the opening degree of the first throttling element 403 can be adjusted to the maximum.

[0076] Optionally, the air conditioning system further comprises a third controller configured to control the reheating multi-way valve 22 to conduct the second exhaust branch 112, and adjust the opening degree of the first throttling element 403 arranged between the reheating heat exchanger 42 and the dehumidification heat exchanger 41 to the maximum opening degree, so that the refrigerant discharged from the compressor 1 enters the first exhaust branch 111 and the second exhaust branch 112, and then enters the dehumidification heat exchanger 41 and the reheating heat exchanger 42 through the system four-way valve 21 and the reheating multi-way valve 22 respectively, and the refrigerant flowing out of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 flows back to the compressor 1 through the outdoor heat exchanger 3, so as to realize the heating mode. As shown in Figure 6 .

[0077] When the air conditioning system runs in the heating mode, the dehumidification heat exchanger 41 and the reheating heat exchanger 42 both act as condensers to heat. Optionally, when the air conditioning system runs in the heating mode, the opening degree of the first throttling element 403 can be adjusted to the maximum.

[0078] The present disclosure also provides a constant temperature dehumidification air conditioning system. As shown in Figures 7 to 10 .

[0079] It can be understood that the embodiments of the air conditioning system described above can also be applied to the constant temperature dehumidification air conditioning system without conflict, which will not be described here again.

[0080] Optionally, the constant temperature dehumidification air conditioning system comprises a compressor 1, a system four-way valve 21, a reheating multi-way valve 22, an outdoor heat exchanger 3 and an indoor heat exchange assembly. The compressor 1 comprises a suction port 12 and a discharge port 11, the suction port 12 is provided with a first suction branch 121 and a second suction branch 122, and the discharge port 11 is provided with a first discharge branch 111 and a second discharge branch 112; the system four-way valve 21 is connected and communicated between the first discharge branch 111 and the first suction branch 121; the reheating multi-way valve 22 is connected and communicated between the second discharge branch 112 and the second suction branch 122; the outdoor heat exchanger 3 is connected and communicated 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 connected and communicated with the outdoor heat exchanger 3, the other end is connected and communicated with the system four-way valve 21, one end of the reheating heat exchanger 42 is connected and communicated with the reheating multi-way valve 22, and the other end is connected and communicated with the dehumidification heat exchanger 41. As shown in Figure 7 .

[0081] In this way, the communication electromagnetic valve 123 arranged between the two cylinders is opened to make the two cylinders conductive, and the communication electromagnetic valve 123 is closed to independently control the two cylinders.

[0082] Optionally, the compressor 1 comprises a first cylinder 1201 and a second cylinder 1202, wherein the first cylinder 1201 is connected and communicated with the first suction branch 121, and the second cylinder 1202 is connected and communicated with the second suction branch 122.

[0083] In the constant temperature dehumidification air conditioning system provided by the present disclosure, the compressor 1 is provided with two cylinders. According to the needs of system operation, the opening or closing of the communication electromagnetic valve 123 is adjusted to make the two cylinders of the compressor 1 conductive or independently controlled.

[0084] Optionally, a first indoor communication pipeline is arranged between the dehumidification heat exchanger 41 and the reheating heat exchanger 42, and the first indoor communication pipeline comprises a first pipe section 401 connected and communicated with the dehumidification heat exchanger 41 and a second pipe section 402 connected and communicated with the reheating heat exchanger 42, wherein the first pipe section 401 is provided with a second throttling element 404, and the second pipe section 402 is provided with a first throttling element 403. As shown in Figure 7 .

[0085] The communication pipe section of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is provided with a throttling element, so that the temperature of the refrigerant entering the two heat exchangers can be adjusted by adjusting the opening degree of the first throttling element 403 and the second throttling element 404 respectively, and the heat exchange effect of the heat exchanger is adjusted.

[0086] Optionally, the constant-temperature dehumidification air conditioning system further comprises an online pipe section 301 connected between the outdoor heat exchanger 3 and the first indoor communication pipe, and the online pipe section 301 is provided with a third throttling element 302, wherein the online pipe section 301 is connected to the pipe section between the first throttling element 403 and the second throttling element 404 of the first indoor communication pipe.

[0087] In the embodiment of the present disclosure, the refrigerant flowing through the third throttling element 302 can enter the reheating heat exchanger 42 after throttling by the first throttling element 403, or can enter the dehumidification heat exchanger 41 after throttling by the second throttling element 404.

[0088] Optionally, the constant-temperature dehumidification air conditioning system further comprises a first controller configured to control the reheating multi-way valve 22 to conduct the second exhaust branch 112, so that the refrigerant discharged by the compressor 1 enters the first exhaust branch 111 in one way, 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 404 to perform dehumidification; the refrigerant discharged by the compressor 1 enters the second exhaust branch 112 in another way, flows into the reheating heat exchanger 42 through the reheating multi-way valve 22 to heat the dehumidified air, so as to realize the reheating dehumidification mode. Figure 8 As shown.

[0089] When the constant-temperature dehumidification air conditioning system operates in the reheating dehumidification mode, the amount of refrigerant entering the dehumidification heat exchanger 41 and the reheating heat exchanger 42 can be adjusted by adjusting the opening degree of the first flow regulating element 111 arranged in the first exhaust branch 111 and the second flow regulating element 1121 arranged in the second exhaust branch 112, and the heat exchange capacity of the dehumidification heat exchanger 41 and the reheating heat exchanger 42 is adjusted, so as to realize the reheating dehumidification, constant-temperature dehumidification or heating dehumidification, and meet the user's demand for temperature in the dehumidification process.

[0090] Optionally, when the constant-temperature dehumidification air conditioning system operates in the constant-temperature dehumidification or heating dehumidification mode, the opening degree of the first throttling element 403 and the second throttling element 404 can be adjusted to the maximum.

[0091] Optionally, the constant temperature dehumidification air conditioning system further comprises a second controller configured to control the reheat multi-way valve 22 to block the second exhaust branch 112 and to open the second suction branch 122, so that the refrigerant discharged by the compressor 1 enters the first exhaust branch 111, and after condensation by the outdoor heat exchanger 3, flows into the dehumidification heat exchanger 41 and the reheat heat exchanger 42, respectively, and then flows back to the compressor 1 through the first suction branch 121 and the second suction branch 122, respectively, to realize the refrigeration or dehumidification mode. As shown in Figure 9 .

[0092] Optionally, when the constant temperature dehumidification air conditioning system operates in the refrigeration or dehumidification mode, the opening degree of the first throttling element 403 can be controlled to be smaller than that of the second throttling element 404; or the opening degree of the first throttling element 403 is controlled to be a preset opening degree, and the opening degree of the second throttling element 404 is adjusted to a maximum opening degree, at this time, the reheat heat exchanger 42 serves as a low-temperature heat exchanger, and the dehumidification heat exchanger 41 serves as a medium-temperature heat exchanger, realizing the dual-temperature evaporation refrigeration mode.

[0093] Optionally, the constant temperature dehumidification air conditioning system further comprises a third controller configured to control the reheat multi-way valve 22 to open the second exhaust branch 112 and to adjust the opening degrees of the first throttling element 403 and the second throttling element 404 arranged between the reheat heat exchanger 42 and the dehumidification heat exchanger 41 to maximum opening degrees, so that the refrigerant discharged by the compressor 1 enters the first exhaust branch 111, enters the dehumidification heat exchanger 41 through the system four-way valve 21, enters the reheat heat exchanger 42 through the reheat multi-way valve 22, and the refrigerant discharged by the dehumidification heat exchanger 41 and the reheat heat exchanger 42 flows back to the compressor 1 through the outdoor heat exchanger 3, to realize the heating mode. As shown in Figure 10 .

[0094] Optionally, when the constant temperature dehumidification air conditioning system operates in the heating mode, the opening degrees of the first throttling element 403 and the second throttling element 404 can be adjusted to maximum opening degrees.

[0095] It can be understood that, Figures 1 to 10 the upper arrowed dashed line represents indoor exhaust air, and the lower arrowed solid line represents indoor intake air.

[0096] 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 constant temperature dehumidifying air conditioning system, characterized by, Comprise: A compressor comprising a suction port and a discharge port, the suction port being provided with a first suction branch and a second suction branch, and the discharge port being provided with a first discharge branch and a second discharge branch; A system four-way valve being in communication with the first discharge branch and the first suction branch; A reheating multi-way valve being in communication with the second discharge branch and the second suction branch; An outdoor heat exchanger being 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, 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 multi-way valve, and the other end is in communication with the dehumidification heat exchanger, Wherein, a communication solenoid valve is arranged between the first suction branch and the second suction branch.

2. The constant-temperature dehumidification air conditioning system according to claim 1, wherein 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.

3. The constant-temperature dehumidification air conditioning system according to claim 1, wherein A first indoor communication pipeline is arranged between the dehumidification heat exchanger and the reheating heat exchanger, and 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, Wherein, the first pipe section is provided with a second throttling element, and the second pipe section is provided with a first throttling element.

4. The constant temperature dehumidifying air conditioning system according to claim 3, wherein Further comprising: An on-line pipe section being in communication between the outdoor heat exchanger and the first indoor communication pipeline, and the on-line pipe section is provided with a third throttling element, Wherein, the on-line pipe section is in communication with the pipe section between the first throttling element and the second throttling element of the first indoor communication pipeline.

5. The constant-temperature dehumidification air conditioning system according to claim 3, wherein The dehumidification heat exchanger comprises a first refrigerant inlet and outlet in communication with the first pipe section, Wherein, a discrete element is arranged between the first refrigerant inlet and outlet and the second throttling element, for dispersing and mixing the refrigerant before flowing into the dehumidification heat exchanger.

6. The constant-temperature dehumidification air conditioning system according to claim 5, wherein The discrete element comprises a filter screen.

7. The constant-temperature dehumidification air conditioning system according to claim 1, 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 multi-way valve.

8. The thermostatic dehumidifying air conditioning system according to any one of claims 1 to 7, characterized in that, Further comprising: A first controller configured to control the reheating multi-way valve to conduct the second discharge branch, 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 through the second throttling element into the dehumidification heat exchanger for dehumidification, and the other way of the refrigerant discharged by the compressor enters the second discharge branch, flows into the reheating heat exchanger through the reheating multi-way valve, and heats the dehumidified air to realize the reheating dehumidification mode.

9. The thermostatic dehumidification and air conditioning system according to claim 8, wherein, Further comprising: The second controller is configured to control the reheating multi-way valve to block the second exhaust branch and to open the second suction branch, so that the refrigerant discharged by the compressor enters the first exhaust branch, is condensed by the outdoor heat exchanger, and then flows into the dehumidification heat exchanger and the reheating heat exchanger, respectively, and then flows back to the compressor through the first suction branch and the second suction branch, to realize the refrigeration or dehumidification mode.

10. The thermostatic dehumidification and air conditioning system according to claim 9, wherein, Also comprising: The third controller is configured to control the reheating multi-way valve to open the second exhaust branch, and to adjust the opening degree of the first throttling element and the second throttling element arranged between the reheating heat exchanger and the dehumidification heat exchanger to the maximum opening degree, so that the refrigerant discharged by the compressor enters the first exhaust branch, enters the dehumidification heat exchanger through the system four-way valve, and enters the reheating heat exchanger through the reheating multi-way valve, and the refrigerant flowing out of the dehumidification heat exchanger and the reheating heat exchanger flows back to the compressor through the outdoor heat exchanger, to realize the heating mode.

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