Heat exchanger device, cabinet type air conditioner and dehumidification control method

Abstract

The invention provides a heat exchanger device, a cabinet air conditioner and a dehumidification control method. The heat exchanger device comprises a heat exchanger and a mounting frame. The heat exchanger comprises a first heat exchanger and a second heat exchanger; the mounting frame comprises a first side support and a second side support which are oppositely arranged, and a mounting cavity is formed between the first side support and the second side support; the first heat exchanger is arranged on the first side support, and the second heat exchanger is arranged on the second side support. The first heat exchanger and the second heat exchanger are located in the mounting cavity, and a containing space is formed between the first heat exchanger and the second heat exchanger. The structures of the first heat exchanger and the second heat exchanger are optimized, the arrangement mode of the first heat exchanger and the second heat exchanger is improved, the effective heat exchange area of the heat exchanger is increased, air can enter the containing space through the first heat exchanger and the second heat exchanger, the air makes full contact with the heat exchanger, the heat exchange time is prolonged, and the heat exchange efficiency is improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of heat exchange, and particularly relates to a heat exchanger device, a cabinet air conditioner and a dehumidification control method. Background Art

[0002] Heat exchangers are widely used in industries such as petrochemical, aerospace, refrigeration and heating; the structure and installation method of heat exchangers are key factors affecting heat exchange efficiency. In existing ventilation equipment, air inlets and air outlets are formed on the side walls of the housing, the heat exchanger is arranged inside the housing and on the side wall of the housing near the air inlet, and air enters the inside of the housing through the air inlet and exchanges heat with the heat exchanger; however, the structure and installation method of the heat exchanger are not reasonably designed, the effective heat exchange area of the heat exchanger is small, resulting in insufficient contact between air and the heat exchanger, short heat exchange time and low heat exchange efficiency. Summary of the Invention

[0003] In view of this, the present invention provides a heat exchanger device, a cabinet air conditioner and a dehumidification control method to solve the problems that in existing ventilation equipment, the structure and installation method of the heat exchanger are not reasonably designed, resulting in insufficient contact between air and the heat exchanger, short heat exchange time and low heat exchange efficiency.

[0004] The present invention provides a heat exchanger device, including a heat exchanger and a mounting frame; the heat exchanger includes a first heat exchanger and a second heat exchanger; the mounting frame includes a first side bracket and a second side bracket oppositely arranged in a first horizontal direction, and an installation cavity is formed between the first side bracket and the second side bracket; the first heat exchanger is arranged on the first side bracket, and the second heat exchanger is arranged on the second side bracket;

[0005] Both the first heat exchanger and the second heat exchanger are located in the installation cavity, and a receiving space is formed between the first heat exchanger and the second heat exchanger, and air can enter the receiving space through the first heat exchanger and the second heat exchanger.

[0006] Further optionally, the first heat exchanger includes two first edges oppositely arranged in a second horizontal direction, and each first edge forms a first side plate; the first side bracket includes two first columns oppositely arranged in the second horizontal direction, and each first column is provided with a first connecting plate; the two first side plates and the two first columns are arranged in one-to-one correspondence and detachably connected, so that the first heat exchanger is arranged on the first side bracket;

[0007] The second heat exchanger includes two second edges oppositely arranged in the second horizontal direction, and each of the second edges forms a second side plate; the second side bracket includes two second columns oppositely arranged in the second horizontal direction, and each of the second columns is provided with a second connecting plate; the two second side plates and the two second columns are arranged in one-to-one correspondence and detachably connected, so that the second heat exchanger is arranged on the second side bracket;

[0008] Wherein, the second horizontal direction is perpendicular to the first horizontal direction.

[0009] Further optionally, the first side bracket is formed with a plurality of first support ribs, and the plurality of first support ribs are arranged at intervals in the vertical direction; the structure of each first support rib is adapted to the structure of the first heat exchanger for supporting the first heat exchanger;

[0010] The second side bracket is formed with a plurality of second support ribs, and the plurality of second support ribs are arranged at intervals in the vertical direction; the structure of each second support rib is adapted to the structure of the second heat exchanger for supporting the second heat exchanger.

[0011] Further optionally, both the first heat exchanger and the first side bracket are formed with a V-shaped structure; when the first heat exchanger is arranged on the first side bracket, the V-shaped structures of the first heat exchanger and the first side bracket protrude towards the same side, and the V-shaped structure of the first heat exchanger surrounds the V-shaped structure of the first side bracket inside;

[0012] Both the second heat exchanger and the second side bracket are formed with a V-shaped structure; when the second heat exchanger is arranged on the second side bracket, the V-shaped structures of the second heat exchanger and the second side bracket protrude towards the same side, and the V-shaped structure of the second heat exchanger surrounds the V-shaped structure of the second side bracket inside;

[0013] The protruding directions of the first side bracket and the second side bracket are opposite.

[0014] Further optionally, the first heat exchanger includes an A1 heat exchange section and a B1 heat exchange section, and the A1 heat exchange section and the B1 heat exchange section are arranged vertically opposite to each other and form a V-shaped structure;

[0015] The second heat exchanger includes an A2 heat exchange section and a B2 heat exchange section; the A2 heat exchange section and the B2 heat exchange section are arranged vertically opposite to each other and form a V-shaped structure;

[0016] The A1 heat exchange section and the A2 heat exchange section are symmetrically arranged left and right with respect to the vertical symmetry axis of the installation frame, and the B1 heat exchange section and the B2 heat exchange section are symmetrically arranged left and right with respect to the vertical symmetry axis of the installation frame.

[0017] Further optionally, the installation frame includes a top bracket and a bottom bracket that are oppositely arranged in the vertical direction. The first side bracket, the top bracket, the second side bracket, and the bottom bracket are sequentially connected to enclose the installation cavity.

[0018] A water receiving tray is arranged on the bottom bracket for collecting condensed water.

[0019] The present invention also provides a cabinet air conditioner, which includes an indoor unit. The indoor unit includes a housing, an air duct assembly, and the heat exchanger device according to any one of the above. A housing cavity is formed inside the housing. An upper air inlet is formed in the upper part of the housing, and a lower air outlet is formed in the lower part of the housing. Both the upper air inlet and the lower air outlet communicate with the interior of the room. The heat exchanger device is arranged in the housing cavity, and the air duct assembly is arranged in the accommodating space. The air duct assembly forms an upper air duct, an upper air blade cavity, a lower air blade cavity, and a lower air duct that are sequentially arranged from top to bottom. The upper air blade cavity includes an upper air blade cavity outlet and an upper air blade cavity inlet. The lower air blade cavity includes a lower air blade cavity outlet and a lower air blade cavity inlet. The upper air duct communicates the upper air inlet and the upper air blade cavity outlet. An upper air return opening is formed on the side wall of the upper air duct, and the upper air return opening communicates the upper air duct and the housing cavity. The lower air duct communicates the lower air outlet and the lower air blade cavity outlet. A lower air return opening is formed on the side wall of the lower air duct, and the lower air return opening communicates the lower air duct and the housing cavity.

[0020] The first heat exchanger is a first indoor heat exchanger, and the second heat exchanger is a second indoor heat exchanger. Both the first indoor heat exchanger and the second indoor heat exchanger are arranged close to the upper air blade cavity inlet and the lower air blade cavity inlet.

[0021] Both the upper air return opening and the lower air return opening can be controlled to be opened or closed. The upper air duct and the upper air blade cavity outlet can be controlled to be communicated or disconnected. The lower air duct and the lower air blade cavity outlet can be controlled to be communicated or disconnected, so that the indoor unit forms a downward air flow path with air entering from the upper air inlet and exiting from the lower air outlet, or an upward air flow path with air entering from the lower air outlet and exiting from the upper air inlet.

[0022] Further optionally, the upper air duct includes an upper main air duct, and an upper air return opening is formed on the side wall of the upper main air duct. The lower air duct includes a lower main air duct, and a lower air return opening is formed on the side wall of the lower main air duct. The air duct assembly includes a volute and a volute cover. The volute and the volute cover are cooperatively connected to form the upper main air duct, the upper air blade cavity, the lower air blade cavity, and the lower main air duct.

[0023] The volute is arranged close to the first side bracket, and each of the first cylinders is provided with a first connecting plate; the volute includes two volute edges arranged opposite to each other in the second horizontal direction, and the two volute edges are arranged and connected in one-to-one correspondence with the two first connecting plates, and a first sealing rib is arranged between the volute edge and the first connecting plate;

[0024] The volute cover is arranged close to the second side bracket, and each of the second cylinders is provided with a second connecting plate; the volute cover includes two volute cover edges arranged opposite to each other in the second horizontal direction, and the two volute cover edges are arranged and connected in one-to-one correspondence with the two second connecting plates, and a second sealing rib is arranged between the volute cover edge and the second connecting plate.

[0025] Further optionally, the cabinet air conditioner further includes an outdoor unit, and the outdoor unit includes an outdoor heat exchanger, a four-way reversing valve, a gas-liquid separator, a compressor, and a throttling device; the outdoor heat exchanger, the four-way reversing valve, the gas-liquid separator, the compressor, the first indoor heat exchanger, the second indoor heat exchanger, and the throttling device are connected through a refrigerant pipeline to form a refrigerant circuit, and the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel in the refrigerant circuit;

[0026] A compressor outlet pipeline is connected between the refrigerant outlet side of the compressor and the refrigerant inlet side of the outdoor heat exchanger, and a first indoor heat exchanger inlet pipeline is connected between the refrigerant inlet side of the first indoor heat exchanger and the refrigerant outlet side of the condenser; a control pipeline is communicated between the compressor outlet pipeline and the first indoor heat exchanger inlet pipeline, and a first control valve is arranged on the control pipeline; a second control valve is arranged on the first indoor heat exchanger inlet pipeline, and the second control valve is closer to the outdoor heat exchanger than the first control valve;

[0027] The cabinet air conditioner is provided with a refrigeration mode and a dehumidification mode; when the cabinet air conditioner is in the refrigeration mode, the first control valve is in the closed state, the second control valves are all in the open state, the first indoor heat exchanger and the second indoor heat exchanger both act as evaporators to absorb heat, and the outdoor heat exchanger acts as a condenser to release heat;

[0028] When the cabinet air conditioner is in the dehumidification mode, the first control valve is in the open state, the second control valve is in the closed state, a part of the refrigerant discharged by the compressor directly enters the first indoor heat exchanger through the first control valve, another part of the refrigerant discharged by the compressor enters the second indoor heat exchanger through the outdoor heat exchanger and the throttling device, the refrigerant discharged by the second indoor heat exchanger and the refrigerant discharged by the first indoor heat exchanger are mixed and then enter the compressor through the gas-liquid separator, and the gas-liquid separator has functions of storing, gas-liquid separation, and flashing of the refrigerant.

[0029] The present invention further provides a dehumidification control method for a cabinet air conditioner, and the cabinet air conditioner is the cabinet air conditioner described above; the dehumidification control method includes:

[0030] Control the cabinet air conditioner to be in the refrigeration mode;

[0031] Judge whether the indoor air needs to be dehumidified. If the indoor air needs to be dehumidified, control the cabinet air conditioner to be in the dehumidification mode.

[0032] Further optionally, the judging whether the indoor air needs to be dehumidified includes:

[0033] Calculate the difference ΔD = Dm - Dd between Dm and Dd, and respectively compare ΔD with D1 and ΔD with D2;

[0034] When ΔD ≥ D1, it is determined that the indoor air is in a high humidity state and needs to be dehumidified;

[0035] When D2 ≤ ΔD < D1, it is determined that the indoor air is in a low humidity state and needs to be dehumidified;

[0036] When ΔD < D2, it is determined that the indoor air does not need to be dehumidified;

[0037] Wherein, Dm is the target humidity of the indoor air, Dd is the current humidity of the indoor air; D1 is the first preset humidity, and D2 is the second preset humidity.

[0038] Further optionally, the controlling the cabinet air conditioner to be in the dehumidification mode includes:

[0039] When the indoor air is in a high humidity state, control the opening degree of the throttling device to be P1 and the compressor to operate at a frequency f1;

[0040] When the indoor air is in a low humidity state, control the opening degree of the throttling device to be P2 and the compressor to operate at a frequency f2;

[0041] Wherein, f1 > f2, P1 < P2.

[0042] Further optionally, the dehumidification control method further includes:

[0043] When the cabinet air conditioner is in the dehumidification mode, obtain T and Tm and compare T and Tm;

[0044] Adjust the opening degree of the first control valve according to the comparison result of T and Tm, and further adjust the refrigerant amount entering the first indoor heat exchanger;

[0045] Wherein, T is the current air outlet temperature of the upper air inlet or the lower air inlet, and Tm is the target temperature of the indoor air.

[0046] Compared with the prior art, the beneficial effects of the present invention mainly lie in:

[0047] The structure of the first side bracket is adapted to the structure of the first heat exchanger, and the structure of the second side bracket is adapted to the structure of the second heat exchanger; the first heat exchanger is arranged on the first side bracket, and the second heat exchanger is arranged on the second side bracket; both the first heat exchanger and the second heat exchanger are located in the installation cavity and a containing space is formed between the first heat exchanger and the second heat exchanger; the structures of the first heat exchanger and the second heat exchanger are optimized, the installation modes of the first heat exchanger and the second heat exchanger are improved, the effective heat exchange area of the heat exchanger is increased, air can enter the containing space through the first heat exchanger and the second heat exchanger, so that the air is in full contact with the heat exchanger, the heat exchange time is prolonged and the heat exchange efficiency is improved, and the problems that in the existing ventilation equipment, due to the unreasonable design of the structure and the installation mode of the heat exchanger, the air is not in full contact with the heat exchanger, the heat exchange time is short and the heat exchange efficiency is low are solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0048] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only exemplary, and for those of ordinary skill in the art, without creative efforts, other implementation drawings can be obtained according to the provided drawings.

[0049] The structures, ratios, sizes, etc. shown in this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limiting conditions for the implementation of the present invention. Therefore, they do not have technical essence. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that the present invention can produce and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in the present invention.

[0050] Figure 1 It is a schematic assembly structure diagram of an embodiment of a heat exchanger device provided by the present invention;

[0051] Figure 2 It is a schematic exploded structure diagram of an embodiment of a heat exchanger device provided by the present invention;

[0052] Figure 3a 、 Figure 3b and Figure 3c It is a schematic assembly structure diagram of an embodiment of a heat exchanger device and a duct assembly provided by the present invention;

[0053] Figure 4Schematic diagram of the internal structure of an embodiment of the cabinet-type air conditioner indoor unit provided by the present invention;

[0054] Figure 5a Schematic diagram of the structure of an embodiment when the cabinet-type air conditioner indoor unit provided by the present invention is in the lower air intake and upper air outlet mode;

[0055] Figure 5b Schematic diagram of the structure of an embodiment when the cabinet-type air conditioner indoor unit provided by the present invention is in the upper air intake and lower air outlet mode;

[0056] Figure 6 Schematic diagram of the structure of an embodiment of the refrigerant circuit of the cabinet-type air conditioner provided by the present invention;

[0057] Figure 7 Schematic diagram of the flow of an embodiment of the dehumidification control method of the cabinet-type air conditioner provided by the present invention;

[0058] In the figure:

[0059] 11 - First heat exchanger; 111 - A1 heat exchange section; 112 - B1 heat exchange section; 113 - First side plate; 12 - Second heat exchanger; 121 - A2 heat exchange section; 122 - B2 heat exchange section; 123 - Second side plate;

[0060] 2 - Installation frame; 21 - First side support; 211 - First connecting plate; 212 - First support rib; 213 - First column; 22 - Second side support; 221 - Second connecting plate; 222 - Second support rib; 223 - Second column; 23 - Top support; 24 - Bottom support; 241 - Water receiving tray; 25 - Accommodating space;

[0061] 31 - Volute; 32 - Volute cover; 33 - First sealing rib; 34 - Second sealing rib; 351 - Upper main air duct; 352 - Upper air impeller cavity; 353 - Upper air impeller; 354 - Upper return air inlet; 361 - Lower main air duct; 362 - Lower air impeller cavity; 363 - Lower air impeller; 364 - Lower return air inlet; 37 - Upper ventilation shell; 371 - Upper auxiliary air duct; 38 - Lower ventilation shell; 381 - Lower auxiliary air duct;

[0062] 41 - Outdoor heat exchanger; 42 - Gas-liquid separator; 43 - Compressor; 44 - First control valve; 45 - Second control valve; 461 - Compressor outlet pipeline; 462 - First indoor heat exchanger inlet pipeline; 463 - Control pipeline;

[0063] 5 - Housing; 51 - Front side wall of the housing; 511 - Lower air inlet; 52 - Left side wall of the housing; 53 - Right side wall of the housing; 54 - Rear side wall of the housing; 55 - Top wall of the housing; 551 - Upper air inlet; 56 - Housing cavity; 57 - Base. Detailed implementation manners

[0064] The following specific embodiments illustrate the implementation manners of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0065] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise. "Plural" generally includes at least two, but does not exclude the case of including at least one.

[0066] It should be understood that the term "and / or" used herein is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. In addition, the character " / " herein generally represents an "or" relationship between the associated objects before and after.

[0067] It should also be noted that the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a commodity or system including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or further includes elements inherent to such commodity or system. Without further limitation, the element defined by the statement "including one..." does not exclude the existence of additional identical elements in the commodity or system including the said element.

[0068] In the existing ventilation equipment, air inlets and air outlets are formed on the side wall of the housing. The heat exchanger is arranged inside the housing and on the side wall of the housing near the air inlet. Air enters the inside of the housing through the air inlet and exchanges heat with the heat exchanger. However, the structure and arrangement of the heat exchanger are not reasonably designed, and the effective heat exchange area of the heat exchanger is small, resulting in insufficient contact between the air and the heat exchanger, short heat exchange time period and low heat exchange efficiency.

[0069] The present invention creatively provides a heat exchanger device, including a heat exchanger and a mounting frame; the heat exchanger includes a first heat exchanger and a second heat exchanger; the mounting frame includes a first side bracket and a second side bracket arranged oppositely, and an installation cavity is formed between the first side bracket and the second side bracket; the structure of the first side bracket is adapted to the structure of the first heat exchanger, and the first heat exchanger is arranged on the first side bracket; the structure of the second side bracket is adapted to the structure of the second heat exchanger, and the second heat exchanger is arranged on the second side bracket; both the first heat exchanger and the second heat exchanger are located in the installation cavity, and a containing space is formed between the first heat exchanger and the second heat exchanger;

[0070] The structures of the first heat exchanger and the second heat exchanger are optimized, the arrangement modes of the first heat exchanger and the second heat exchanger are improved, the effective heat exchange area of the heat exchanger is increased, air can enter the containing space through the first heat exchanger and the second heat exchanger, so that the air is in full contact with the heat exchanger, the heat exchange time is prolonged, and the heat exchange efficiency is improved, and the problems that in the existing ventilation equipment, due to the unreasonable design of the structures and arrangement modes of the heat exchanger, the air is not in full contact with the heat exchanger, the heat exchange time period is short, and the heat exchange efficiency is low are solved.

[0071] <Heat exchanger device>

[0072] As Figures 1 to 2 shown, this embodiment provides a heat exchanger device, including a heat exchanger and a mounting frame 2; the heat exchanger includes a first heat exchanger 11 and a second heat exchanger 12; the mounting frame 2 includes a first side bracket 21 and a second side bracket 22 arranged oppositely in the first horizontal direction and a top bracket 23 and a bottom bracket 24 arranged oppositely in the vertical direction. The first side bracket 21, the top bracket 23, the second side bracket 22 and the bottom bracket 24 are sequentially connected and enclose an installation cavity; a water receiving tray 241 is arranged on the bottom bracket 24 for collecting condensed water;

[0073] The structure of the first side bracket 21 is adapted to the structure of the first heat exchanger 11, and the first heat exchanger 11 is arranged on the first side bracket 21; the structure of the second side bracket 22 is adapted to the structure of the second heat exchanger 12, and the second heat exchanger 12 is arranged on the second side bracket 22; both the first heat exchanger 11 and the second heat exchanger 12 are located in the installation cavity, and a containing space 25 is formed between the first heat exchanger 11 and the second heat exchanger 12, and air can enter the containing space 25 through the first heat exchanger 11 and the second heat exchanger 12.

[0074] In view of the problems of complex connection structure and unreliable connection between two heat exchangers and corresponding side brackets, this embodiment proposes that the first heat exchanger 11 includes two first edges oppositely arranged in the second horizontal direction, and each first edge forms a first side plate 113; the first side bracket 21 includes two first columns 213 oppositely arranged in the second horizontal direction, and each first column 213 is provided with a first connecting plate 211; the two first side plates 113 and the two first columns 213 are arranged in one-to-one correspondence and detachably connected, so that the first heat exchanger 11 is arranged on the first side bracket 21;

[0075] The second heat exchanger 12 includes two second edges oppositely arranged in the second horizontal direction, and each second edge forms a second side plate 123; the second side bracket 22 includes two second columns 223 oppositely arranged in the second horizontal direction, and each second column 223 is provided with a second connecting plate 221; the two second side plates 123 and the two second columns 223 are arranged in one-to-one correspondence and detachably connected, so that the second heat exchanger 12 is arranged on the second side bracket 22; wherein, the second horizontal direction is perpendicular to the first horizontal direction. Preferably, the vertical direction is the up-down direction, the first horizontal direction is the left-right direction, and the second horizontal direction is the front-back direction;

[0076] Further, the first side plate 113 and the first column 213 are connected by a first fixing structure, and the first fixing structure includes a first side plate screw hole and a first column screw hole. The first side plate screw hole is formed on the first side plate 113, and the first column screw hole is formed on the first column 213; the first side plate screw hole and the first column screw hole correspond to each other and are connected by screws, so that the first side plate 113 and the first column 213 are connected;

[0077] The second side plate 123 and the second column 223 are connected by a second fixing structure, and the second fixing structure includes a second side plate screw hole and a second column screw hole. The second side plate screw hole is formed on the second side plate 123, and the second column screw hole is formed on the second column 223; the second side plate screw hole and the second column screw hole correspond to each other and are connected by screws, so that the second side plate 123 and the second column 223 are connected.

[0078] In view of the problem of unreliable connection between two heat exchangers and corresponding side brackets, this embodiment proposes that the first side bracket 21 is formed with a plurality of first support ribs 212, and the plurality of first support ribs 212 are arranged at intervals in the vertical direction; the structure of each first support rib 212 is adapted to the structure of the first heat exchanger 11 and is used to support the first heat exchanger 11;

[0079] The second side bracket 22 is formed with a plurality of second support ribs 222, and the plurality of second support ribs 222 are arranged at intervals in the vertical direction; the structure of each second support rib 222 is adapted to the structure of the second heat exchanger 12 for supporting the second heat exchanger 12.

[0080] In addition, both the first heat exchanger 11 and the first side bracket 21 are formed with a V-shaped structure; when the first heat exchanger 11 is arranged on the first side bracket 21, the V-shaped structures of the first heat exchanger 11 and the first side bracket 21 protrude to the same side, and the V-shaped structure of the first heat exchanger 11 surrounds the inner side of the V-shaped structure of the first side bracket 21;

[0081] Both the second heat exchanger 12 and the second side bracket 22 are formed with a V-shaped structure; when the second heat exchanger 12 is arranged on the second side bracket 22, the V-shaped structures of the second heat exchanger 12 and the second side bracket 22 protrude to the same side, and the V-shaped structure of the second heat exchanger 12 surrounds the inner side of the V-shaped structure of the second side bracket 22; the protruding directions of the first side bracket 21 and the second side bracket 22 are opposite;

[0082] The first side bracket 21 is in full contact with and connected to the first heat exchanger 11, and the second side bracket 22 is in full contact with and connected to the second heat exchanger 12.

[0083] Furthermore, the first heat exchanger 11 includes an A1 heat exchange section 111 and a B1 heat exchange section 112, and the A1 heat exchange section 111 and the B1 heat exchange section 112 are arranged vertically opposite to each other and form a V-shaped structure; satisfying: 90° ≤ ɑ ≤ 180°;

[0084] The second heat exchanger 12 includes an A2 heat exchange section 121 and a B2 heat exchange section 122; the A2 heat exchange section 121 and the B2 heat exchange section 122 are arranged vertically opposite to each other and form a V-shaped structure; satisfying: 90° ≤ β ≤ 180°;

[0085] Wherein, ɑ is the angle between the heat exchange surfaces of the A1 heat exchange section 111 and the B1 heat exchange section 112, and β is the angle between the heat exchange surfaces of the A2 heat exchange section 121 and the B2 heat exchange section 122;

[0086] The A1 heat exchange section 111 and the A2 heat exchange section 121 are symmetrically arranged about the vertical symmetry axis of the installation frame 2, and the B1 heat exchange section 112 and the B2 heat exchange section 122 are symmetrically arranged about the vertical symmetry axis of the installation frame 2.

[0087] <Cabinet air conditioner>

[0088] Such as Figures 3a to 5bAs shown in the figure, this embodiment further provides a cabinet air conditioner, which includes an indoor unit. The indoor unit includes a housing 5, an air duct assembly, and the heat exchanger device described in any one of the above. A housing cavity 56 is formed inside the housing 5. An upper air inlet 551 is formed at the upper part of the housing 5, and a lower air inlet 511 is formed at the lower part of the housing 5. Both the upper air inlet 551 and the lower air inlet 511 communicate with the interior of the room. The heat exchanger device is arranged in the housing cavity 56, and the air duct assembly is arranged in the accommodation space 25. The air duct assembly forms an upper air duct, an upper air blade cavity 352, a lower air blade cavity 362, and a lower air duct that are arranged in sequence from top to bottom. The upper air blade cavity 352 includes an upper air blade cavity outlet and an upper air blade cavity inlet. The lower air blade cavity 362 includes a lower air blade cavity outlet and a lower air blade cavity inlet. The upper air duct communicates the upper air inlet 551 and the upper air blade cavity outlet. An upper air return opening 354 is formed on the side wall of the upper air duct, and the upper air return opening 354 communicates the upper air duct and the housing cavity 56. The lower air duct communicates the lower air inlet 511 and the lower air blade cavity outlet. A lower air return opening 364 is formed on the side wall of the lower air duct, and the lower air return opening 364 communicates the lower air duct and the housing cavity 56. Specifically, the housing 5 includes a housing front side wall 51, a housing rear side wall 54, a housing left side wall 52, a housing right side wall 53, a housing top wall 55, and a base 57. The housing front side wall 51 and the housing rear side wall 54 are arranged opposite to each other front and back. The housing left side wall 52 and the housing right side wall 53 are arranged opposite to each other left and right. The housing top wall 55 and the base 17 are arranged opposite to each other up and down. The housing front side wall 51, the housing left side wall 52, the housing rear side wall 54, and the housing right side wall 53 are connected in sequence, and the housing front side wall 51, the housing rear side wall 54, the housing left side wall 52, and the housing right side wall 53 are arranged on the base 57. The housing top wall 55 is arranged on the housing front side wall 51, the housing rear side wall 54, the housing left side wall 52, and the housing right side wall 53. The housing front side wall 51, the housing rear side wall 54, the housing left side wall 52, the housing right side wall 53, the housing top wall 55, and the base 57 enclose the housing cavity 56. A lower air inlet 511 is formed at the lower side of the housing front side wall 51, and the lower air inlet 511 is arranged close to the base 57. The housing top wall 55 forms an upper air inlet 551. The upper end of the upper air duct communicates with the interior of the room through the upper air inlet 551, and the lower end of the upper air duct communicates with the upper air blade cavity outlet. The lower end of the lower air duct communicates with the interior of the room through the lower air inlet 511, and the upper end of the lower air duct communicates with the lower air blade cavity outlet.

[0089] The first heat exchanger 11 is the first indoor heat exchanger, and the second heat exchanger 12 is the second indoor heat exchanger. Both the first indoor heat exchanger and the second indoor heat exchanger are arranged close to the upper air blade cavity inlet and the lower air blade cavity inlet.

[0090] The upper air blade cavity inlet includes an upper air blade cavity left inlet and an upper air blade cavity right inlet that are arranged opposite to each other along the first horizontal direction. The lower air blade cavity inlet includes a lower air blade cavity left inlet and a lower air blade cavity right inlet that are arranged opposite to each other along the first horizontal direction.

[0091] As Figures 5a to 5bAs shown, both the upper air return opening 354 and the lower air return opening 364 can be controlled to open or close, the upper air duct and the outlet of the upper air blade cavity can be controlled to communicate or disconnect, and the lower air duct and the outlet of the lower air blade cavity can be controlled to communicate or disconnect, so that the indoor unit forms a downward air flow path with air entering from the upper air inlet 551 and exiting from the lower air outlet 511, or an upward air flow path with air entering from the lower air outlet 511 and exiting from the upper air outlet 551; specifically, when the upper air return opening 354 is controlled to open, the lower air return opening 364 is controlled to close, the upper air duct and the outlet of the upper air blade cavity can be controlled to disconnect, and the lower air duct and the outlet of the lower air blade cavity can be controlled to communicate, the indoor unit forms a downward air flow path with air entering from the upper air inlet 551 and exiting from the lower air outlet 511; when the upper air return opening 354 is controlled to close, the lower air return opening 364 is controlled to open, the upper air duct and the outlet of the upper air blade cavity can be controlled to communicate, and the lower air duct and the outlet of the lower air blade cavity can be controlled to disconnect, the indoor unit forms an upward air flow path with air entering from the lower air outlet 511 and exiting from the upper air outlet 551;

[0092] The upper air duct includes an upper main air duct 351 and an upper auxiliary air duct 371. The upper auxiliary air duct 371 is located at the top of the upper main air duct 351 and communicates the upper air inlet 551 and the upper main air duct 351; an upper air return opening 354 is formed on the side wall of the upper main air duct 351; the lower air duct includes a lower main air duct 361 and a lower auxiliary air duct 381. The lower auxiliary air duct 381 is located at the bottom of the lower main air duct 361 and communicates the lower air outlet 511 and the lower main air duct 361; a lower air return opening 364 is formed on the side wall of the lower main air duct 361;

[0093] As Figure 5a shown, when the indoor unit forms a downward air flow path, indoor air enters the upper auxiliary air duct 371 through the upper air inlet 551 and sequentially flows through the upper main air duct 351 and the upper air return opening 354 into the housing cavity 56. A part of the air in the housing cavity 56 enters the lower air blade cavity 362 through the first indoor heat exchanger and the left inlet of the lower air blade cavity, and another part of the air in the housing cavity 56 enters the lower air blade cavity 362 through the second indoor heat exchanger and the right inlet of the lower air blade cavity. The air in the lower air blade cavity 362 sequentially flows through the lower main air duct 361, the lower auxiliary air duct 381 and the lower air outlet 511 and is discharged; when the air flows through the first indoor heat exchanger, it completes heat exchange with the first indoor heat exchanger, and when the air flows through the second indoor heat exchanger, it completes heat exchange with the second indoor heat exchanger; thus, the air flowing through the first indoor heat exchanger can be mixed with the air flowing through the second indoor heat exchanger;

[0094] As Figure 5bAs shown, when the indoor unit forms an upper air outlet flow path, indoor air enters the lower air duct through the lower air inlet and successively flows through the lower main air duct 361 and the lower air return opening 364 to enter the housing cavity 56. A part of the air in the housing cavity 56 enters the upper air blade cavity 352 through the first indoor heat exchanger and the left inlet of the upper air blade cavity. Another part of the air in the housing cavity 56 enters the upper air blade cavity 352 through the second indoor heat exchanger and the right inlet of the upper air blade cavity; the air in the upper air blade cavity 352 successively flows through the upper main air duct 351, the upper auxiliary air duct 371 and the upper air outlet 551 and is discharged; when the air flows through the first indoor heat exchanger, heat exchange is completed with the first indoor heat exchanger, and when the air flows through the second indoor heat exchanger, heat exchange is completed with the second indoor heat exchanger; thus, the air flowing through the first indoor heat exchanger can be mixed with the air flowing through the second indoor heat exchanger.

[0095] Furthermore, the air duct assembly includes a volute 31 and a volute cover 32. The volute 31 and the volute cover 32 are cooperatively connected to form an upper main air duct 351, an upper air blade cavity, a lower air blade cavity and a lower main air duct 361; the volute 31 is disposed close to the first side bracket 21; the volute 31 includes two volute edges oppositely disposed in the second horizontal direction. The two volute edges are correspondingly disposed and connected to the two first connection plates 211, and a first sealing rib 33 is disposed between the volute edge and the first connection plate 211; the first sealing rib 33 enables the volute 31 to be hermetically connected to the first connection plate 211;

[0096] The volute cover 32 is disposed close to the second side bracket 22; the volute cover 32 includes two volute cover edges oppositely disposed in the second horizontal direction. The two volute cover 32 edges are correspondingly disposed and connected to the two second connection plates 221, and a second sealing rib 34 is disposed between the volute cover 32 edge and the second connection plate 221; the second sealing rib 34 enables the volute cover 32 to be hermetically connected to the second connection plate 221;

[0097] Specifically, the air duct assembly further includes an upper ventilation housing 37 and a lower ventilation housing 38. Both the upper ventilation housing 37 and the lower ventilation housing 38 are disposed in the housing cavity 56; the upper ventilation housing 37 is disposed at the top of the upper main air duct 351 and forms an upper auxiliary air duct 371; the lower ventilation housing 38 is disposed at the bottom of the lower main air duct 361 and forms a lower auxiliary air duct 381; an upper air blade 353 is rotatably disposed in the upper air blade cavity 352, and a lower air blade 363 is rotatably disposed in the lower air blade cavity 362; when the indoor unit forms an upper air outlet flow path, the upper air blade 353 is controlled to rotate; when the indoor unit forms a lower air outlet flow path, the lower air blade 363 is controlled to rotate.

[0098] In addition, as Figure 6As shown, the cabinet air conditioner further includes an outdoor unit, which includes an outdoor heat exchanger 41, a four-way reversing valve, a gas-liquid separator 42, a compressor 43, and a throttling device; the outdoor heat exchanger 41, the four-way reversing valve, the gas-liquid separator 42, the compressor 43, the first indoor heat exchanger, the second indoor heat exchanger, and the throttling device are connected through a refrigerant pipeline to form a refrigerant circuit, and the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel in the refrigerant circuit;

[0099] A compressor outlet pipeline 461 is connected between the refrigerant outlet side of the compressor 43 and the refrigerant inlet side of the outdoor heat exchanger 41, and a first indoor heat exchanger inlet pipeline 462 is connected between the refrigerant inlet side of the first indoor heat exchanger and the refrigerant outlet side of the condenser; a control pipeline 463 is communicated between the compressor outlet pipeline 461 and the first indoor heat exchanger inlet pipeline 462, and a first control valve 44 is arranged on the control pipeline 463; a second control valve 45 is arranged on the first indoor heat exchanger inlet pipeline 462, and the second control valve 45 is relatively closer to the outdoor heat exchanger 41 than the first control valve 44;

[0100] The cabinet air conditioner is provided with a refrigeration mode and a dehumidification mode; when the cabinet air conditioner is in the refrigeration mode, the first control valve 44 is in the closed state, the second control valves 45 are all in the open state, the first indoor heat exchanger and the second indoor heat exchanger both act as evaporators to absorb heat, and the outdoor heat exchanger 41 acts as a condenser to release heat;

[0101] When the cabinet air conditioner is in the dehumidification mode, the first control valve 44 is in the open state, the second control valve 45 is in the closed state, a part of the refrigerant discharged by the compressor 43 directly enters the first indoor heat exchanger through the first control valve 44, another part of the refrigerant discharged by the compressor 43 enters the second indoor heat exchanger through the outdoor heat exchanger 41 and the throttling device, the refrigerant discharged by the second indoor heat exchanger and the refrigerant discharged by the first indoor heat exchanger are mixed and then enter the compressor 43 through the gas-liquid separator 42, and the gas-liquid separator 42 has the functions of storing, gas-liquid separation, and flashing of the refrigerant; the high-temperature air flowing through the first indoor heat exchanger can be mixed with the low-temperature air flowing through the second indoor heat exchanger and then discharged into the room to achieve a constant temperature effect.

[0102] <Dehumidification control method>

[0103] As Figure 7 shown, this embodiment further provides a dehumidification control method for a cabinet air conditioner, and the cabinet air conditioner is the cabinet air conditioner described above; the dehumidification control method includes:

[0104] Control the cabinet air conditioner to be in the refrigeration mode;

[0105] Judge whether the indoor air needs to be dehumidified. In the case that the indoor air needs to be dehumidified, control the cabinet air conditioner to be in the dehumidification mode;

[0106] Controlling the first indoor heat exchanger and the second indoor heat exchanger separately can achieve the effect of dehumidification without temperature reduction; when the humidity of the indoor air is high, rapid dehumidification and constant temperature can be achieved, and when the humidity is slightly high, energy-saving dehumidification and constant temperature can be achieved.

[0107] Furthermore, determining whether the indoor air needs dehumidification includes:

[0108] Obtaining Dd;

[0109] Calculating the difference ΔD = Dm - Dd between Dm and Dd and comparing ΔD with D1 and ΔD with D2 respectively;

[0110] When ΔD ≥ D1, it is determined that the indoor air is in a high humidity state and needs dehumidification;

[0111] When D2 ≤ ΔD < D1, it is determined that the indoor air is in a low humidity state and needs dehumidification;

[0112] When ΔD < D2, it is determined that the indoor air does not need to be dehumidified;

[0113] Wherein, Dm is the target humidity of the indoor air, Dd is the current humidity of the indoor air; D1 is the first preset humidity, and D2 is the second preset humidity.

[0114] Controlling the cabinet air conditioner to be in the dehumidification mode includes:

[0115] When the indoor air is in a high humidity state, controlling the opening degree of the throttling device to be P1 and the compressor 43 to operate at the frequency f1;

[0116] When the indoor air is in a low humidity state, controlling the opening degree of the throttling device to be P2 and the compressor 43 to operate at the frequency f2;

[0117] Wherein, f1 > f2, P1 < P2.

[0118] In addition, the dehumidification control method further includes:

[0119] When the cabinet air conditioner is in the dehumidification mode, obtaining T and Tm and comparing T and Tm;

[0120] Adjusting the opening degree of the first control valve 44 according to the comparison result of T and Tm, and further adjusting the refrigerant amount entering the first indoor heat exchanger; so that the outlet air temperature after the high-temperature air flowing through the first indoor heat exchanger is mixed with the low-temperature air flowing through the second indoor heat exchanger is close to the target temperature;

[0121] Wherein, T is the current outlet air temperature of the upper air outlet 551 or the lower air outlet 511, and Tm is the target temperature of the indoor air; specifically, when the upper air outlet 551 blows air, T is the current outlet air temperature of the upper air outlet 551; when the lower air outlet 511 blows air, T is the current outlet air temperature of the lower air outlet 511.

[0122] The exemplary embodiments of the present disclosure have been specifically shown and described above. It should be understood that the present disclosure is not limited to the detailed structures, arrangements or implementation methods described herein; on the contrary, the present disclosure is intended to cover various modifications and equivalent arrangements included within the spirit and scope of the appended claims.

Claims

1. A heat exchanger device, characterized in that, It includes a heat exchanger and an installation frame; the heat exchanger includes a first heat exchanger and a second heat exchanger; the installation frame includes a first side bracket and a second side bracket oppositely arranged in the first horizontal direction, and an installation cavity is formed between the first side bracket and the second side bracket; the first heat exchanger is arranged on the first side bracket, and the second heat exchanger is arranged on the second side bracket; Both the first heat exchanger and the second heat exchanger are located in the installation cavity, and a receiving space is formed between the first heat exchanger and the second heat exchanger, and air can enter the receiving space through the first heat exchanger and the second heat exchanger.

2. The heat exchanger device according to claim 1, characterized in that, The first heat exchanger includes two first edges oppositely arranged in the second horizontal direction, and each of the first edges forms a first side plate; the first side bracket includes two first columns oppositely arranged in the second horizontal direction; the two first side plates and the two first columns are arranged in one-to-one correspondence and are detachably connected, so that the first heat exchanger is arranged on the first side bracket; The second heat exchanger includes two second edges oppositely arranged in the second horizontal direction, and each of the second edges forms a second side plate; along the second horizontal direction, the second side bracket includes two second columns oppositely arranged in the second horizontal direction; the two second side plates and the two second columns are arranged in one-to-one correspondence and are detachably connected, so that the second heat exchanger is arranged on the second side bracket; Wherein, the second horizontal direction is perpendicular to the first horizontal direction.

3. The heat exchanger device according to claim 2, characterized in that, The first side bracket is formed with a plurality of first support ribs, and the plurality of first support ribs are arranged at intervals in the vertical direction; the structure of each first support rib is adapted to the structure of the first heat exchanger for supporting the first heat exchanger; The second side bracket is formed with a plurality of second support ribs, and the plurality of second support ribs are arranged at intervals in the vertical direction; the structure of each second support rib is adapted to the structure of the second heat exchanger for supporting the second heat exchanger.

4. The heat exchanger device according to claim 2, characterized in that, Both the first heat exchanger and the first side bracket are formed with a V-shaped structure; when the first heat exchanger is arranged on the first side bracket, the V-shaped structures of the first heat exchanger and the first side bracket protrude in the same side, and the V-shaped structure of the first heat exchanger surrounds the V-shaped structure of the first side bracket inside; Both the second heat exchanger and the second side bracket are formed with a V-shaped structure; when the second heat exchanger is arranged on the second side bracket, the V-shaped structures of the second heat exchanger and the second side bracket protrude in the same side, and the V-shaped structure of the second heat exchanger surrounds the V-shaped structure of the second side bracket inside; The protruding directions of the first side bracket and the second side bracket are opposite.

5. The heat exchanger device according to claim 4, characterized in that, The first heat exchanger includes an A1 heat exchange section and a B1 heat exchange section, and the A1 heat exchange section and the B1 heat exchange section are arranged oppositely up and down and form a V-shaped structure; The second heat exchanger includes an A2 heat exchange section and a B2 heat exchange section; the A2 heat exchange section and the B2 heat exchange section are arranged oppositely up and down and form a V-shaped structure; The A1 heat exchange section and the A2 heat exchange section are symmetrically arranged on the left and right with respect to the vertical symmetry axis of the installation frame, and the B1 heat exchange section and the B2 heat exchange section are symmetrically arranged on the left and right with respect to the vertical symmetry axis of the installation frame.

6. The heat exchanger device according to claim 2, characterized in that, The installation frame includes a top bracket and a bottom bracket oppositely arranged in the vertical direction. The first side bracket, the top bracket, the second side bracket, and the bottom bracket are sequentially connected and enclose the installation cavity. A water receiving tray is arranged on the bottom bracket for collecting condensed water.

7. A floor-standing air conditioner, characterized in that, The cabinet air conditioner includes an indoor unit. The indoor unit includes a housing, an air duct assembly, and the heat exchanger device according to any one of claims 2 to 6. A housing cavity is formed inside the housing. An upper air inlet is formed at the upper part of the housing, and a lower air inlet is formed at the lower part of the housing. Both the upper air inlet and the lower air inlet communicate with the interior of the room. The heat exchanger device is arranged in the housing cavity, and the air duct assembly is arranged in the accommodation space. The air duct assembly forms an upper air duct, an upper air blade cavity, a lower air blade cavity, and a lower air duct arranged in sequence from top to bottom. The upper air blade cavity includes an upper air blade cavity outlet and an upper air blade cavity inlet. The lower air blade cavity includes a lower air blade cavity outlet and a lower air blade cavity inlet. The upper air duct communicates the upper air inlet and the upper air blade cavity outlet. An upper air return opening is formed on the side wall of the upper air duct, and the upper air return opening communicates the upper air duct and the housing cavity. The lower air duct communicates with the lower air inlet and the lower air blade cavity outlet. A lower air return opening is formed on the side wall of the lower air duct, and the lower air return opening communicates the lower air duct and the housing cavity. The first heat exchanger is a first indoor heat exchanger, and the second heat exchanger is a second indoor heat exchanger. Both the first indoor heat exchanger and the second indoor heat exchanger are arranged close to the upper air blade cavity inlet and the lower air blade cavity inlet. Both the upper air return opening and the lower air return opening can be controlled to be opened or closed. The upper air duct and the upper air blade cavity outlet can be controlled to be communicated or disconnected. The lower air duct and the lower air blade cavity outlet can be controlled to be communicated or disconnected, so that the indoor unit forms a downward air flow path with air entering from the upper air inlet and exiting from the lower air outlet, or an upward air flow path with air entering from the lower air inlet and exiting from the upper air outlet.

8. The cabinet air conditioner according to claim 7, wherein The upper air duct includes an upper main air duct, and an upper air return opening is formed on the side wall of the upper main air duct. The lower air duct includes a lower main air duct, and a lower air return opening is formed on the side wall of the lower main air duct. The air duct assembly includes a volute and a volute cover. The volute and the volute cover are cooperatively connected to form the upper main air duct, the upper air blade cavity, the lower air blade cavity, and the lower main air duct. The volute is arranged close to the first side bracket. Each of the first cylinders is provided with a first connecting plate. The volute includes two volute edges oppositely arranged in the second horizontal direction. The two volute edges are arranged in one-to-one correspondence with the two first connecting plates and are connected. A first sealing rib is arranged between the volute edge and the first connecting plate. The volute cover is disposed close to the second side bracket, and each of the second cylinders is provided with a second connecting plate; the volute cover includes two volute cover edges oppositely disposed in the second horizontal direction, and the two volute cover edges are respectively and correspondingly disposed and connected to the two second connecting plates, and a second sealing rib is disposed between the volute cover edge and the second connecting plate.

9. The cabinet air conditioner according to claim 7, characterized in that, The cabinet air conditioner further includes an outdoor unit, and the outdoor unit includes an outdoor heat exchanger, a four-way reversing valve, a gas-liquid separator, a compressor, and a throttling device; the outdoor heat exchanger, the four-way reversing valve, the gas-liquid separator, the compressor, the first indoor heat exchanger, the second indoor heat exchanger, and the throttling device are connected through a refrigerant pipeline to form a refrigerant circuit, and the first indoor heat exchanger and the second indoor heat exchanger are connected in parallel in the refrigerant circuit; A compressor outlet pipeline is connected between the refrigerant outlet side of the compressor and the refrigerant inlet side of the outdoor heat exchanger, and a first indoor heat exchanger inlet pipeline is connected between the refrigerant inlet side of the first indoor heat exchanger and the refrigerant outlet side of the condenser; a control pipeline is communicated between the compressor outlet pipeline and the first indoor heat exchanger inlet pipeline, and a first control valve is disposed on the control pipeline; a second control valve is disposed on the first indoor heat exchanger inlet pipeline, and the second control valve is closer to the outdoor heat exchanger than the first control valve; The cabinet air conditioner is provided with a refrigeration mode and a dehumidification mode; when the cabinet air conditioner is in the refrigeration mode, the first control valve is in a closed state, the second control valves are all in an open state, the first indoor heat exchanger and the second indoor heat exchanger both act as evaporators to absorb heat, and the outdoor heat exchanger acts as a condenser to release heat; When the cabinet air conditioner is in the dehumidification mode, the first control valve is in an open state, the second control valve is in a closed state, a part of the refrigerant discharged from the compressor directly enters the first indoor heat exchanger through the first control valve, another part of the refrigerant discharged from the compressor enters the second indoor heat exchanger through the outdoor heat exchanger and the throttling device, the refrigerant discharged from the second indoor heat exchanger and the refrigerant discharged from the first indoor heat exchanger are mixed and then enter the compressor through the gas-liquid separator, and the gas-liquid separator has functions of storing, gas-liquid separation, and flashing of the refrigerant.

10. A dehumidification control method for a cabinet air conditioner, characterized in that, The cabinet air conditioner is the cabinet air conditioner according to claim 9; The dehumidification control method includes: Controlling the cabinet air conditioner to be in the refrigeration mode; Judging whether the indoor air needs to be dehumidified, and when the indoor air needs to be dehumidified, controlling the cabinet air conditioner to be in the dehumidification mode.

11. The dehumidification control method of the cabinet air conditioner according to claim 10, characterized in that, The judging whether the indoor air needs to be dehumidified includes: Calculating the difference ΔD = Dm - Dd between Dm and Dd and respectively comparing ΔD with D1 and ΔD with D2; When ΔD ≥ D1, it is determined that the indoor air is in a high humidity state and needs to be dehumidified; When D2 ≤ ΔD < D1, it is determined that the indoor air is in a low humidity state and needs to be dehumidified; When ΔD < D2, it is determined that there is no need to dehumidify the indoor air; Wherein, Dm is the target humidity of the indoor air, and Dd is the current humidity of the indoor air; D1 is the first preset humidity, and D2 is the second preset humidity.

12. The dehumidification control method of the cabinet air conditioner according to claim 11, characterized in that, Controlling the cabinet air conditioner to be in the dehumidification mode includes: When the indoor air is in a high humidity state, controlling the opening degree of the throttling device to be P1 and the compressor to operate at a frequency f1; When the indoor air is in a low humidity state, controlling the opening degree of the throttling device to be P2 and the compressor to operate at a frequency f2; Wherein, f1 > f2 and P1 < P2.

13. The dehumidification control method of the cabinet air conditioner according to claim 10, wherein, The dehumidification control method further includes: When the cabinet air conditioner is in the dehumidification mode, obtaining T and Tm and comparing T and Tm; Adjusting the opening degree of the first control valve according to the comparison result of T and Tm, and further adjusting the refrigerant amount entering the first indoor heat exchanger; Wherein, T is the current outlet air temperature of the upper air outlet or the lower air outlet, and Tm is the target temperature of the indoor air.

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