Reheating dehumidification air conditioning system

Abstract

The utility model relates to the technical field of dehumidification, and discloses a reheating dehumidification air conditioning system. The reversing valve assembly comprises a first reversing valve and a second reversing valve, the first reversing valve is communicated with the exhaust port, and the second reversing valve is communicated with the first reversing valve; the indoor heat exchange assembly comprises an indoor heat exchanger and an indoor reheating heat exchanger which are communicated in series, a dehumidification valve is arranged between the indoor heat exchanger and the indoor reheating heat exchanger, and refrigerant inlets and outlets in the two ends of the outdoor heat exchanger communicate with a first reversing valve and a second reversing valve correspondingly. The indoor reheating heat exchanger is communicated with the first valve port end of the second reversing valve, and the indoor heat exchanger is communicated with the second valve port end of the second reversing valve. According to the reheating dehumidification air conditioning system, different indoor temperature adjusting requirements of a user in the dehumidification process of the air conditioning system are met, and the user experience is improved.

Description

TECHNICAL FIELD

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

[0002] The air conditioning system installed in a building is a key temperature and humidity adjusting device in a room, which includes a refrigerant circulation system composed of a compressor, a four-way reversing valve, a condenser, a throttling element and an evaporator, etc. to realize a refrigeration mode, a heating mode and a dehumidification mode, etc.

[0003] The air conditioning system can operate in a dehumidification mode, for example, two indoor heat exchange modules are arranged, and a dehumidification valve is arranged between the indoor heat exchange modules, so that the high-temperature and high-pressure refrigerant flowing out of the exhaust port of the compressor first flows through one indoor heat exchange module for reheating, and then flows through the other indoor heat exchange module for dehumidification after throttling by the dehumidification valve, so that the air conditioning system realizes dehumidification operation.

[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 limited temperature adjusting capability when operating in a dehumidification mode, and cannot adjust the temperature during the dehumidification process to meet different user needs according to user needs.

[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, the following is a simple summary. The summary is not a general review, nor is it intended to determine the key / important elements or to delineate the protection scope of these embodiments, but as a prelude to the detailed description below.

[0008] The present application provides a reheating dehumidification air conditioning system, comprising: a compressor comprising a suction port and an exhaust port; a reversing valve assembly comprising a first reversing valve and a second reversing valve, the first reversing valve being in communication with the exhaust port, and the second reversing valve being in communication with the first reversing valve; an indoor heat exchange assembly comprising an indoor heat exchanger and an indoor reheating heat exchanger arranged in series communication, and a dehumidification valve arranged between the indoor heat exchanger and the indoor reheating heat exchanger; and an outdoor heat exchanger, the refrigerant inlet and outlet at both ends of the outdoor heat exchanger being in communication with the first reversing valve and the second reversing valve, respectively, wherein the indoor reheating heat exchanger is in communication with the first valve port end of the second reversing valve, and the indoor heat exchanger is in communication with the second valve port end of the second reversing valve.

[0009] In some optional embodiments, the reheat dehumidification air conditioning system further comprises a throttling element arranged between the outdoor heat exchanger and the second reversing valve.

[0010] In some optional embodiments, the first reversing valve comprises a first four-way valve; and / or, the second reversing valve comprises a second four-way valve.

[0011] In some optional embodiments, the reheat dehumidification air conditioning system further comprises an indoor housing provided with an indoor air inlet and an indoor air outlet, wherein the indoor heat exchange assembly is arranged in the indoor housing.

[0012] In some optional embodiments, the indoor heat exchanger is arranged close to the indoor air inlet, and the indoor reheat heat exchanger is arranged close to the indoor air outlet.

[0013] In some optional embodiments, the flow direction of the refrigerant in the indoor reheat heat exchanger and / or the indoor heat exchanger forms a first direction, and the air path between the indoor air inlet and the indoor air outlet of the indoor housing forms a second direction, wherein the first direction is opposite to the second direction.

[0014] In some optional embodiments, the heat exchange area of the indoor heat exchanger is less than or equal to the heat exchange area of the outdoor heat exchanger; and / or, the heat exchange area of the indoor heat exchanger is less than or equal to the heat exchange area of the indoor reheat heat exchanger.

[0015] In some optional embodiments, the reheat dehumidification air conditioning system further comprises a first controller configured to adjust the opening degree of the dehumidification valve to be less than or equal to a first preset opening degree, adjust the opening degree of the throttling element arranged between the outdoor heat exchanger and the second reversing valve to be greater than or equal to a second preset opening degree, and adjust the port communication mode of the first reversing valve and the second reversing valve, so that the refrigerant discharged from the discharge port of the compressor flows into the indoor reheat heat exchanger in sequence through the first reversing valve and the second reversing valve, flows into the indoor heat exchanger after throttling of the dehumidification valve, and then flows back to the compressor in sequence through the throttling element, the outdoor heat exchanger and the first reversing valve, so as to make the air conditioning system operate in the heating and dehumidification mode.

[0016] In some optional embodiments, the reheat dehumidification air conditioning system further comprises a second controller configured to adjust the opening degree of the dehumidification valve to be less than or equal to a first preset opening degree, adjust the opening degree of the throttling element arranged between the outdoor heat exchanger and the second reversing valve to be greater than or equal to a second preset opening degree, and adjust the port communication mode of the first reversing valve and the second reversing valve, so that the refrigerant discharged from the discharge port of the compressor flows into the outdoor heat exchanger through the first reversing valve, flows into the indoor reheat heat exchanger through the second reversing valve after flowing through the throttling element, flows into the indoor heat exchanger after throttling of the dehumidification valve, and then flows back to the compressor in sequence through the second reversing valve and the first reversing valve, so as to make the air conditioning system operate in the constant temperature dehumidification mode.

[0017] In some optional embodiments, the reheat dehumidification air conditioning system further comprises a third controller, wherein the third controller is configured to: adjust the opening degree of the dehumidification valve to be greater than or equal to the second preset opening degree, and adjust the port communication mode of the first reversing valve and the second reversing valve, so that the refrigerant discharged from the discharge port of the compressor flows to the outdoor heat exchanger through the first reversing valve, flows through the throttling element, and then flows into the indoor reheat heat exchanger and the indoor heat exchanger through the second reversing valve in sequence, and after heat exchange is completed, flows back to the compressor through the second reversing valve and the first reversing valve in sequence, so that the air conditioning system operates in a cooling mode; and / or, adjust the opening degree of the dehumidification valve to be greater than or equal to the second preset opening degree, and adjust the port communication mode of the first reversing valve and the second reversing valve, so that the refrigerant discharged from the discharge port of the compressor flows into the indoor reheat heat exchanger and the indoor heat exchanger through the first reversing valve and the second reversing valve, and after heat exchange is completed, flows into the outdoor heat exchanger through the second reversing valve, and finally flows back to the compressor through the first reversing valve, so that the air conditioning system operates in a heating mode.

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

[0019] The reheat dehumidification air conditioning system provided by the embodiments of the present disclosure comprises a compressor, a reversing valve assembly, an indoor heat exchange assembly, and an outdoor heat exchanger. The compressor comprises a suction port and a discharge port; the reversing valve assembly comprises a first reversing valve and a second reversing valve, the first reversing valve is in communication with the discharge port, and the second reversing valve is in communication with the first reversing valve; the indoor heat exchange assembly comprises an indoor heat exchanger and an indoor reheat heat exchanger which are arranged in series; a dehumidification valve is arranged between the indoor heat exchanger and the indoor reheat heat exchanger; and the refrigerant inlet and outlet at both ends of the outdoor heat exchanger are in communication with the first reversing valve and the second reversing valve, respectively. The indoor reheat heat exchanger is in communication with the first valve port end of the second reversing valve, and the indoor heat exchanger is in communication with the second valve port end of the second reversing valve.

[0020] The reheat dehumidification air conditioning system provided by the embodiments of the present disclosure is provided with the first reversing valve and the second reversing valve at the same time. Through the arrangement of the two reversing valves, the air conditioning system has different refrigerant flow paths when operating in a dehumidification mode. For example, when the air conditioning system operates in a temperature-increasing dehumidification mode, the high-temperature and high-pressure gaseous refrigerant flowing out of the compressor can be directly introduced into the indoor reheat heat exchanger for reheating by adjusting the port communication state of the two reversing valves, and then introduced into the indoor heat exchanger for dehumidification after the dehumidification valve, so as to realize temperature-increasing dehumidification. When the air conditioning system operates in a constant-temperature dehumidification mode, the high-temperature and high-pressure gaseous refrigerant flowing out of the compressor can be first introduced into the outdoor heat exchanger, and then introduced into the indoor reheat heat exchanger and the indoor heat exchanger by adjusting the port communication state of the two reversing valves, so as to realize constant-temperature dehumidification.

[0021] It can be seen that the air conditioning system provided by the embodiments of the present disclosure can run different dehumidification modes, and the different dehumidification modes have different temperature regulation capabilities in the dehumidification process, meet different temperature requirements of users in the dehumidification process, and improve user experience.

[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 illustrated by way of example with reference to the accompanying drawings, which are schematic and not intended to be limiting of the embodiments, in which like reference numerals denote like elements in the figures, and in which:

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

[0025] Figure 2 is a schematic diagram of another reheat dehumidification air conditioning system provided by an embodiment of the present disclosure;

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

[0027] Figure 4 is a schematic diagram of another reheat dehumidification air conditioning system provided by an embodiment of the present disclosure.

[0028] LIST OF REFERENCE NUMERALS

[0029] 1: compressor; 11: exhaust port; 12: suction port;

[0030] 21: first reversing valve; 22: second reversing valve; 221: first valve port end; 222: second valve port end;

[0031] 31: indoor reheat heat exchanger; 32: indoor heat exchanger; 301: dehumidification valve;

[0032] 4: outdoor heat exchanger; 401: throttling element. DETAILED DESCRIPTION

[0033] In order to enable persons skilled in the art to more fully understand the features and technical contents of the embodiments of the present disclosure, the implementation of the embodiments of the present disclosure will be described in detail below with reference to the 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 full 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 show.

[0034] The terms "first", "second", and the like in the description and claims of the present disclosure and the above drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so as to describe the present disclosure. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover non-exclusive inclusion.

[0035] In 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 present disclosure and its embodiments, and are not intended 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 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 dependent relationship or connection relationship in some cases. For those skilled in the art, the specific meanings of these terms in the present disclosure can be understood according to the specific circumstances.

[0036] In addition, the terms "set", "connected", "fixed" should be broadly understood. For example, "connected" can be fixed connection, detachable connection, or integral structure; can be mechanical connection, or electrical connection; can be direct connection, or indirect connection through an intermediate medium, or internal communication between two devices, elements or components. For those skilled in the art, the specific meanings of the above terms in the present disclosure can be understood according to the specific circumstances.

[0037] Unless otherwise specified, the term "a plurality of" means two or more.

[0038] In the present disclosure, the character " / " represents an "or" relationship between the objects before and after it. For example, A / B means: A or B.

[0039] 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 means: A or B, or, A and B, the three relationships.

[0040] It should be noted that the embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0041] The present disclosure provides a reheat dehumidification air conditioning system, as shown in Figures 1 to 4

[0042] ​Optionally, the reheating dehumidification air conditioning system comprises a compressor 1, a reversing valve assembly, an indoor heat exchange assembly and an outdoor heat exchanger 4. The compressor 1 comprises a suction port 12 and a discharge port 11; the reversing valve assembly comprises a first reversing valve 21 and a second reversing valve 22, wherein the first reversing valve 21 is connected with the discharge port 11, and the second reversing valve 22 is connected with the first reversing valve 21; the indoor heat exchange assembly comprises an indoor heat exchanger 32 and an indoor reheating heat exchanger 31 which are connected in series, and a dehumidification valve 301 is arranged between the indoor heat exchanger 32 and the indoor reheating heat exchanger 31, and the refrigerant inlet and outlet at both ends of the outdoor heat exchanger 4 are connected with the first reversing valve 21 and the second reversing valve 22 respectively. The indoor reheating heat exchanger 31 is connected with the first valve port end 221 of the second reversing valve 22, and the indoor heat exchanger 32 is connected with the second valve port end 222 of the second reversing valve 22.

[0043] In the reheating dehumidification air conditioning system provided by the embodiment of the present disclosure, the refrigerant inlet and outlet at both ends of the outdoor heat exchanger 4 are connected with the first reversing valve 21 and the second reversing valve 22 respectively, that is, the two ends of the outdoor heat exchanger 4 are connected with different reversing valves, and the indoor reheating heat exchanger 31 is connected with the first valve port end 221 of the second reversing valve 22, and the indoor heat exchanger 32 is connected with the second valve port end 222 of the second reversing valve 22. In this way, the air conditioning system can run different dehumidification modes according to different temperature requirements in the dehumidification process.

[0044] For example, when the user has a high demand for temperature rise in the dehumidification process, such as in the case of returning to the south, the air conditioning system can be controlled to run the temperature rise dehumidification mode. The high-temperature and high-pressure gaseous refrigerant discharged from the discharge port 11 of the compressor 1 flows into the indoor reheating heat exchanger 31 in sequence through the first reversing valve 21 and the second reversing valve 22, and then flows into the indoor heat exchanger 32 after throttling by the dehumidification valve 301. At this time, the indoor heat exchanger 32 functions as an evaporator for dehumidification, and the indoor reheating heat exchanger 31 functions as a condenser for reheating. Moreover, the opening degree of the dehumidification valve 301 can be adjusted according to different requirements for temperature and humidity. For example, when the user has a high demand for temperature rise, the opening degree of the dehumidification valve 301 can be adjusted to be larger; or when the user has a high demand for humidity reduction, the opening degree of the dehumidification valve 301 can be adjusted to be smaller.

[0045] Or, when the user's demand for temperature rise is low during the dehumidification process, the high-temperature and high-pressure gaseous refrigerant discharged from the compressor 1 exhaust port 11 can first flow to the outdoor heat exchanger 4 through the first reversing valve 21, and the opening of the throttling element 401 is adjusted to the maximum, and then flows to the indoor reheating heat exchanger 31 through the second reversing valve 22, and then flows into the indoor heat exchanger 32 after the throttling action of the dehumidification valve 301. At this time, the indoor heat exchanger 32 dehumidifies as an evaporator, and the indoor reheating heat exchanger 31 functions as a condenser to reheat. However, compared with the aforementioned temperature rise dehumidification mode, the temperature of the refrigerant discharged from the compressor 1 and flowing through the outdoor heat exchanger 4 and the throttling element 401 with little throttling action to the indoor reheating heat exchanger 31 is relatively low. At this time, the air conditioning system realizes the constant temperature dehumidification mode.

[0046] It can be seen that, by the arrangement of the two reversing valves, the temperature of the refrigerant flowing into the indoor reheating heat exchanger 31 is different in different dehumidification modes, thereby realizing different dehumidification operation modes such as temperature rise dehumidification and constant temperature dehumidification, improving the diversity of temperature adjustment during dehumidification, meeting the needs of users, and improving the user experience.

[0047] Optionally, the reheating dehumidification air conditioning system further comprises a throttling element 401 arranged between the outdoor heat exchanger 4 and the second reversing valve 22.

[0048] In the embodiment of the present disclosure, the throttling element 401 is arranged between the outdoor heat exchanger 4 and the second reversing valve 22 to adjust the temperature of the refrigerant flowing out of the outdoor heat exchanger 4 and flowing into the second reversing valve 22, or to adjust the temperature of the refrigerant flowing out of the second reversing valve 22 and flowing into the outdoor heat exchanger 4.

[0049] Optionally, the throttling element 401 and the dehumidification valve 301 are both electromagnetic expansion valves.

[0050] Optionally, the first reversing valve 21 comprises a first four-way valve; and / or, the second reversing valve 22 comprises a second four-way valve.

[0051] In the embodiment of the present disclosure, the first reversing valve 21 can be a first four-way valve, and the second reversing valve 22 can be a second four-way valve. By adjusting the communication state of the ports of the two four-way valves, the air conditioning system can realize different dehumidification modes.

[0052] Optionally, the reheating dehumidification air conditioning system further comprises an indoor housing provided with an indoor air inlet and an indoor air outlet. The indoor heat exchange assembly is arranged in the indoor housing.

[0053] The indoor shell can be understood as a shell of an indoor unit of an air conditioning system. The indoor heat exchanger 32 and the indoor reheating heat exchanger 31 of the indoor heat exchange assembly are arranged in the indoor shell. The indoor shell is provided with an indoor air inlet and an indoor air outlet, and the indoor heat exchanger 32 and the indoor reheating heat exchanger 31 are arranged in the indoor shell in a transverse and parallel manner, so that indoor air entering from the indoor air inlet can pass through the indoor heat exchanger 32 and the indoor reheating heat exchanger 31 in sequence and then be blown out from the indoor air outlet.

[0054] It can be understood that, Figure 1 and Figure 2 The dashed box shown in the indoor shell.

[0055] Optionally, a filter screen is arranged at the indoor air inlet to shield sundries entering the indoor shell; and optionally, a wind guide component such as a guide vane is arranged at the indoor air outlet to adjust the wind direction of air conditioning air sent out from the indoor air outlet.

[0056] Optionally, the indoor heat exchanger 32 is arranged close to the indoor air inlet, and the indoor reheating heat exchanger 31 is arranged close to the indoor air outlet.

[0057] In the embodiments of the present disclosure, compared with the indoor reheating heat exchanger 31, the indoor heat exchanger 32 is arranged closer to the indoor air inlet; and compared with the indoor heat exchanger 32, the indoor reheating heat exchanger 31 is arranged closer to the indoor air outlet.

[0058] Optionally, the indoor heat exchanger 32 comprises a tube-fin heat exchanger and comprises a plurality of heat exchange branches arranged in parallel communication, such as five heat exchange branches, as shown in Figure 1 Similarly, the indoor reheating heat exchanger 31 comprises a tube-fin heat exchanger and also comprises a plurality of heat exchange branches arranged in parallel communication, such as five heat exchange branches.

[0059] Optionally, the flow direction of refrigerant in the indoor reheating heat exchanger 31 and / or the indoor heat exchanger 32 forms a first direction, and the air path between the indoor air inlet and the indoor air outlet of the indoor shell forms a second direction, wherein the first direction is opposite to the second direction.

[0060] In the embodiments of the present disclosure, the first direction of the flow of refrigerant in the indoor reheating heat exchanger 31 and / or the indoor heat exchanger 32 is opposite to the second direction formed by the indoor air inlet and the indoor air outlet, so that the heat exchange effect of the indoor heat exchanger 32 and the indoor reheating heat exchanger 31 is improved. As shown in Figure 2 It can be understood that, Figure 2 In the embodiments of the present disclosure, the solid arrowhead shown in the flow direction of refrigerant in the indoor reheating heat exchanger 31 and / or the indoor heat exchanger 32 forms a first direction; and the dashed arrowhead shown in the air path between the indoor air inlet and the indoor air outlet of the indoor shell forms a second direction.

[0061] Optionally, the heat exchange area of the indoor heat exchanger 32 is less than or equal to the heat exchange area of the outdoor heat exchanger 4; and / or, the heat exchange area of the indoor heat exchanger 32 is less than or equal to the heat exchange area of the indoor reheating heat exchanger 31.

[0062] The heat exchange area of the indoor heat exchanger 32 is less than the heat exchange area of the indoor reheating heat exchanger 31, so that when the air conditioning system operates in the temperature-increasing dehumidification mode, the heat exchange capacity of the indoor reheating heat exchanger 31 is greater than the heat exchange capacity of the indoor heat exchanger 32, that is, the heat exchange capacity of the indoor reheating heat exchanger 31 as a condenser is greater than the heat exchange capacity of the indoor heat exchanger 32 as an evaporator, so that the temperature-increasing effect in the dehumidification process is improved.

[0063] Optionally, the reheating dehumidification air conditioning system further comprises a first controller configured to adjust the opening degree of the dehumidification valve 301 to be less than or equal to a first preset opening degree, adjust the opening degree of the throttling element 401 arranged between the outdoor heat exchanger 4 and the second reversing valve 22 to be greater than or equal to a second preset opening degree, and adjust the port communication mode of the first reversing valve 21 and the second reversing valve 22, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows into the indoor reheating heat exchanger 31 in sequence through the first reversing valve 21 and the second reversing valve 22, flows into the indoor heat exchanger 32 after throttling by the dehumidification valve 301, and then flows back to the compressor 1 in sequence through the outdoor heat exchanger 4 and the first reversing valve 21, so that the air conditioning system operates in the temperature-increasing dehumidification mode.

[0064] The reheating dehumidification air conditioning system provided by the embodiments of the present disclosure can operate in a temperature-increasing dehumidification mode. Figure 3 As shown in the figure. The high-temperature and high-pressure gaseous refrigerant flowing out of the exhaust port 11 of the compressor 1 flows into the indoor reheating heat exchanger 31 in sequence through the first reversing valve 21 and the second reversing valve 22, and then flows into the indoor heat exchanger 32 after throttling by the dehumidification valve 301. In the temperature-increasing dehumidification mode, the indoor reheating heat exchanger 31 acts as a condenser to play a reheating role, and the indoor heat exchanger 32 acts as an evaporator to play a dehumidification role. In the temperature-increasing dehumidification mode, the temperature of the refrigerant flowing into the indoor reheating heat exchanger 31 is relatively high, and the reheating effect is good, so that the temperature-increasing effect in the dehumidification process can be realized.

[0065] Optionally, in the temperature-increasing dehumidification mode, the opening degree of the dehumidification valve 301 can be adjusted to be the smallest, and the opening degree of the throttling element 401 between the outdoor heat exchanger 4 and the second reversing valve 22 can be adjusted to be the largest.

[0066] Optionally, the reheating dehumidification air conditioning system further comprises a second controller configured to adjust the opening degree of the dehumidification valve 301 to be less than or equal to a first preset opening degree, adjust the opening degree of the throttling element 401 arranged between the outdoor heat exchanger 4 and the second reversing valve 22 to be greater than or equal to a second preset opening degree, and adjust the port communication mode of the first reversing valve 21 and the second reversing valve 22, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows to the outdoor heat exchanger 4 through the first reversing valve 21, flows into the indoor reheating heat exchanger 31 through the second reversing valve 22 after flowing through the throttling element 401, flows into the indoor heat exchanger 32 after throttling of the dehumidification valve 301, and then flows back to the compressor 1 through the second reversing valve 22 and the first reversing valve 21 in sequence, so that the air conditioning system operates in the constant-temperature dehumidification mode.

[0067] The reheating dehumidification air conditioning system provided by the embodiments of the present disclosure can also operate in the constant-temperature dehumidification mode. As shown in the figure, the high-temperature and high-pressure gaseous refrigerant discharged from the exhaust port 11 of the compressor 1 first flows into the outdoor heat exchanger 4 through the first reversing valve 21, and then flows through the throttling element 401 with a large opening degree, and then flows into the indoor reheating heat exchanger 31 through the second reversing valve 22, and then flows into the indoor heat exchanger 32 after throttling of the dehumidification valve 301. In the constant-temperature dehumidification mode, the indoor reheating heat exchanger 31 acts as a condenser to play a reheating role, and the indoor heat exchanger 32 acts as an evaporator to play a dehumidification role. Compared with the temperature-increasing dehumidification mode, the temperature of the refrigerant flowing into the indoor reheating heat exchanger 31 is lower in the constant-temperature dehumidification mode. Figure 4

[0068] Optionally, when operating in the constant-temperature dehumidification mode, the opening degree of the dehumidification valve 301 can be adjusted to be the smallest, and the opening degree of the throttling element 401 between the outdoor heat exchanger 4 and the second reversing valve 22 can be adjusted to be the largest.

[0069] It can be seen that the air conditioning system provided by the embodiments of the present disclosure can adjust the communication state of the ports of the two reversing valves, and adjust the opening degrees of the throttling element 401 and the dehumidification valve 301, to realize the temperature-increasing dehumidification mode and the constant-temperature dehumidification mode, and realize the diversity of temperature adjustment in the dehumidification process, thereby meeting the needs of users.

[0070] Optionally, the reheating dehumidification air conditioning system further comprises a third controller, wherein the third controller is configured to adjust the opening degree of the dehumidification valve 301 to be greater than or equal to the second preset opening degree, and adjust the port communication mode of the first reversing valve 21 and the second reversing valve 22, so that the refrigerant discharged from the exhaust port 11 of the compressor 1 flows to the outdoor heat exchanger 4 through the first reversing valve 21, flows into the indoor reheating heat exchanger 31 and the indoor heat exchanger 32 through the second reversing valve 22 in sequence after flowing through the throttling element 401, and then flows back to the compressor 1 through the second reversing valve 22 and the first reversing valve 21 in sequence after heat exchange is completed, so that the air conditioning system operates in the refrigeration mode.

[0071] ​The reheat dehumidification air conditioning system provided by the embodiments of the present disclosure can run a conventional cooling mode, as shown in FIG. 2. Alternatively, in the cooling mode, the opening degree of the dehumidification valve 301 can be adjusted to the maximum, so that the indoor heat exchanger 32 and the indoor reheat heat exchanger 31 both function as evaporators to achieve the cooling effect; and the opening degree of the throttling element 401 between the outdoor heat exchanger 4 and the second reversing valve 22 can be adjusted according to the set temperature of the user, for example, the opening degree of the throttling element 401 can be adjusted to the minimum. Figure 4 It can be understood that the refrigerant flow path diagrams of the constant-temperature dehumidification mode and the cooling mode are both as shown in FIG. 2, but the opening degrees of the dehumidification valve 301 and the throttling element 401 are different in the two modes.

[0072] It can be understood that the refrigerant flow path diagrams of the constant-temperature dehumidification mode and the cooling mode are both as shown in FIG. 2, but the opening degrees of the dehumidification valve 301 and the throttling element 401 are different in the two modes. Figure 4

[0073] The third controller can also be configured to adjust the opening degree of the dehumidification valve 301 to be greater than or equal to a second preset opening degree, and at the same time, adjust the port communication mode of the first reversing valve 21 and the second reversing valve 22, so that the refrigerant discharged from the discharge port 11 of the compressor 1 flows into the indoor reheat heat exchanger 31 and the indoor heat exchanger 32 through the first reversing valve 21 and the second reversing valve 22, after heat exchange, flows into the outdoor heat exchanger 4 through the second reversing valve 22, and finally flows back to the compressor 1 through the first reversing valve 21, so that the air conditioning system runs in the heating mode.

[0074] The reheat dehumidification air conditioning system provided by the embodiments of the present disclosure can run a conventional heating mode, as shown in FIG. 3. Alternatively, in the heating mode, the opening degree of the dehumidification valve 301 can be adjusted to the maximum, so that the indoor heat exchanger 32 and the indoor reheat heat exchanger 31 both function as condensers to achieve the heating effect; and the opening degree of the throttling element 401 between the outdoor heat exchanger 4 and the second reversing valve 22 can be adjusted according to the set temperature of the user, for example, the opening degree of the throttling element 401 can be adjusted to the minimum. Figure 3 It can be understood that the refrigerant flow path diagrams of the constant-temperature dehumidification mode and the cooling mode are both as shown in FIG. 2, but the opening degrees of the dehumidification valve 301 and the throttling element 401 are different in the two modes.

[0075] It can be understood that the refrigerant flow path diagrams of the constant-temperature dehumidification mode and the cooling mode are both as shown in FIG. 2, but the opening degrees of the dehumidification valve 301 and the throttling element 401 are different in the two modes. Figure 3

[0076] 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 substituted for parts and features of other embodiments. The embodiments of the present disclosure are not limited to the structures already described 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 reheat dehumidification air conditioning system, characterized in that, include: The compressor includes an intake port and an exhaust port; The reversing valve assembly includes a first reversing valve and a second reversing valve, wherein the first reversing valve is connected to the exhaust port and the second reversing valve is connected to the first reversing valve. An indoor heat exchange assembly includes an indoor heat exchanger and an indoor reheat heat exchanger connected in series, and a dehumidification valve is provided between the indoor heat exchanger and the indoor reheat heat exchanger; and, The outdoor heat exchanger has refrigerant inlets and outlets at both ends connected to the first and second reversing valves, respectively. The indoor reheat heat exchanger is connected to the first valve port of the second reversing valve, and the indoor heat exchanger is connected to the second valve port of the second reversing valve.

2. The reheat dehumidification air conditioning system according to claim 1, characterized in that, Also includes: A throttling element is installed between the outdoor heat exchanger and the second reversing valve.

3. The reheat dehumidification air conditioning system according to claim 1, characterized in that, The first directional valve includes a first four-way valve; and / or, The second directional valve includes a second four-way valve.

4. The reheat dehumidification air conditioning system according to claim 1, characterized in that, Also includes: The indoor casing is equipped with an indoor air inlet and an indoor air outlet. The indoor heat exchange components are located inside the indoor shell.

5. The reheat dehumidification air conditioning system according to claim 4, characterized in that, The indoor heat exchanger is located near the indoor air inlet, and the indoor reheat heat exchanger is located near the indoor air outlet.

6. The reheat dehumidification air conditioning system according to claim 4, characterized in that, The flow direction of the refrigerant within the indoor reheat heat exchanger and / or the indoor heat exchanger forms a first direction, while the airflow path between the indoor air inlet and the indoor air outlet of the indoor shell forms a second direction. The first direction is opposite to the second direction.

7. The reheat dehumidification air conditioning system according to claim 1, characterized in that, The heat exchange area of ​​the indoor heat exchanger is less than or equal to the heat exchange area of ​​the outdoor heat exchanger; and / or, The heat exchange area of ​​the indoor heat exchanger is less than or equal to the heat exchange area of ​​the indoor reheat heat exchanger.

8. The reheat dehumidification air conditioning system according to any one of claims 1 to 7, characterized in that, Also includes: The first controller is configured to adjust the opening of the dehumidification valve to be less than or equal to a first preset opening, adjust the opening of the throttling element located between the outdoor heat exchanger and the second reversing valve to be greater than or equal to a second preset opening, and simultaneously adjust the port connection mode of the first and second reversing valves so that the refrigerant discharged from the compressor's exhaust port flows sequentially through the first and second reversing valves, flows into the indoor reheat heat exchanger, flows into the indoor heat exchanger after being throttled by the dehumidification valve, flows through the throttling element, and then flows back to the compressor sequentially through the outdoor heat exchanger and the first reversing valve, so that the air conditioning system operates in a heating and dehumidification mode.

9. The reheat dehumidification air conditioning system according to claim 8, characterized in that, Also includes: The second controller is configured to adjust the opening of the dehumidification valve to be less than or equal to the first preset opening, adjust the opening of the throttling element located between the outdoor heat exchanger and the second reversing valve to be greater than or equal to the second preset opening, and simultaneously adjust the port connection mode of the first and second reversing valves so that the refrigerant discharged from the compressor's exhaust port flows to the outdoor heat exchanger through the first reversing valve, flows through the throttling element, flows into the indoor reheat heat exchanger through the second reversing valve, flows into the indoor heat exchanger after the throttling effect of the dehumidification valve, and then flows back to the compressor through the second and first reversing valves in sequence, so that the air conditioning system operates in constant temperature dehumidification mode.

10. The reheat dehumidification air conditioning system according to claim 9, characterized in that, It also includes a third controller, which is configured as follows: Adjust the opening of the dehumidification valve to be greater than or equal to the second preset opening. Simultaneously, adjust the port connection of the first and second reversing valves so that the refrigerant discharged from the compressor's outlet flows through the first reversing valve to the outdoor heat exchanger. After passing through the throttling element, it flows sequentially through the second reversing valve into the indoor reheat heat exchanger and then into the indoor heat exchanger. After heat exchange is completed, it flows back to the compressor sequentially through the second and first reversing valves, thereby enabling the air conditioning system to operate in cooling mode; and / or, Adjust the opening of the dehumidification valve to be greater than or equal to the second preset opening. At the same time, adjust the port connection mode of the first reversing valve and the second reversing valve so that the refrigerant discharged from the compressor outlet flows into the indoor reheat heat exchanger and the indoor heat exchanger through the first reversing valve and the second reversing valve. After heat exchange is completed, it flows into the outdoor heat exchanger through the second reversing valve and finally flows back to the compressor through the first reversing valve, so that the air conditioning system operates in heating mode.

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