CN219283609U

CN219283609U - Heat exchanger module, heat exchange dehumidification assembly, air conditioner indoor unit and air conditioner

Info

Publication number: CN219283609U
Application number: CN202223531816.6U
Authority: CN
Inventors: 张献峰; 梁涛; 茹祥武; 褚庆明
Original assignee: Anhui Yangzi Air Conditioning Co ltd
Current assignee: Anhui Yangzi Air Conditioning Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-06-30
Anticipated expiration: 2032-12-29

Abstract

The utility model provides a heat exchanger module, a heat exchange dehumidifying assembly, an air conditioner indoor unit and an air conditioner, wherein the heat exchanger module comprises a first heat exchanger and a second heat exchanger, the first heat exchanger comprises a first U-shaped tube group, a high-pressure straight tube, a low-pressure straight tube, a first fin group and a second fin group, the first fin group wraps the first U-shaped tube group, the second fin group comprises a first fin part wrapping the high-pressure straight tube and a second fin part wrapping the low-pressure straight tube, a gap is reserved between the first fin part and the second fin part, a third interface of the high-pressure straight tube is positioned at the first side of the heat exchanger module and is in butt joint with the first U-shaped tube group, a fourth interface of the high-pressure straight tube and a fifth interface of the low-pressure straight tube are both positioned at the second side of the heat exchanger module, and the second heat exchanger comprises a second U-shaped tube group connected with a sixth interface of the low-pressure straight tube and a third fin group wrapping the second U-shaped tube group. The heat exchange dehumidification assembly, the air conditioner indoor unit and the air conditioner are all provided with the heat exchanger module, and the heat exchanger module has reasonable structural layout and good dehumidification performance.

Description

Heat exchanger module, heat exchange dehumidification assembly, air conditioner indoor unit and air conditioner

Technical Field

The utility model relates to the technical field of air conditioners, in particular to a heat exchanger module, a heat exchange and dehumidification assembly provided with the heat exchanger module, an air conditioner indoor unit provided with the heat exchange and dehumidification assembly and an air conditioner comprising the air conditioner indoor unit.

Background

At present, a household air conditioner basically has a dehumidification function, but the household air conditioner can dehumidify only when the air conditioner is in a refrigerating state, the temperature of a space where an air conditioner indoor unit is located is reduced in the dehumidification process, and meanwhile, the dehumidification start-stop is limited by the set temperature in the space, so that dehumidified cold air can be blown to a user after the air conditioner indoor unit is started to perform the dehumidification function, and dehumidification comfort is not achieved. In this regard, the patent of the utility model with the publication number of CN215412140U provides a low-noise refrigerating and heating two-way dehumidifying air conditioner which not only has a dehumidifying function, but also can realize the effects of not cooling and dehumidifying during refrigerating operation and heating and dehumidifying during heating operation. However, the low noise cooling and heating bidirectional dehumidifying air conditioner has the following problems: because the pipeline design is unreasonable, the capillary tube-one-way stop electromagnetic valve pipeline component in the air conditioner indoor unit, the air inlet pipe and the air return pipe of the heat exchanger are all positioned on the same side of the heat exchanger, so that the capillary tube-one-way stop electromagnetic valve pipeline component, the air inlet pipe and the air return pipe have serious structural interference, the structure is unreasonable, and the problem of mass production technology exists.

Disclosure of Invention

In order to solve the above problems, a first object of the present utility model is to provide a heat exchanger module with reasonable structural layout and good dehumidification performance.

The second object of the utility model is to provide a heat exchange and dehumidification assembly provided with the heat exchanger module.

A third object of the present utility model is to provide an air conditioning indoor unit provided with the heat exchange and dehumidification assembly described above.

A fourth object of the present utility model is to provide an air conditioner provided with the above-described air conditioner indoor unit.

In order to achieve the first object of the utility model, the utility model provides a heat exchanger module, which comprises a first heat exchanger and a second heat exchanger, wherein the first heat exchanger comprises a first U-shaped tube group, a high-pressure straight tube, a low-pressure straight tube, a first fin group and a second fin group, the first fin group is wrapped on the first U-shaped tube group, a first interface and a second interface of the first U-shaped tube group are both positioned on the first side of the heat exchanger module in the width direction of the heat exchanger module, the second fin group comprises a first fin part and a second fin part, a gap is reserved between the first fin part and the second fin part, the second fin part is positioned between the first fin part and the first fin group, the first fin part is wrapped on the high-pressure straight tube, a third interface of the high-pressure straight tube is in butt joint with the second interface, the second fin part is wrapped on the low-pressure straight tube, a fourth interface of the high-pressure straight tube and a fifth interface of the low-pressure straight tube are both positioned on the second side of the heat exchanger module, the second heat exchanger comprises a second U-shaped tube group and a third fin group, the third fin group is wrapped on the fourth interface of the first U-shaped tube group and the third interface is positioned on the sixth interface of the heat exchanger module, and the eighth interface is positioned on the first side of the first interface of the heat exchanger module.

From the above, the fourth interface of the high-pressure straight pipe and the fifth interface of the low-pressure straight pipe are both used for being connected with the dehumidification control unit, the first interface of the first U-shaped pipe group and the seventh interface of the second U-shaped pipe group are respectively used for being connected with corresponding connecting pipes, and when the heat exchanger module is connected with the dehumidification control unit, the dehumidification control unit and the connecting pipes can be positioned on two opposite sides of the first heat exchanger through the structural design of the heat exchanger module, so that structural interference between the dehumidification control unit and the connecting pipes is avoided, meanwhile, the assembly of the dehumidification control unit is more convenient, and the problem of mass production technology existing in the prior art is solved. In addition, the first fin portion and the second fin portion of the second fin group are provided with the gaps therebetween, so that the high-pressure straight tube and the low-pressure straight tube can be prevented from exchanging heat with each other through the first fin portion and the second fin portion. Moreover, the design also enables the high-pressure straight pipe to be immersed in condensed water generated by dehumidification, so that the high-temperature high-pressure refrigerant and the low-temperature condensed water exchange heat, thereby increasing the supercooling degree of the high-temperature high-pressure refrigerant, reducing the evaporation temperature of the low-pressure refrigerant throttled by the capillary tube of the dehumidification control unit, and improving the dehumidification capacity.

The first fin group comprises a third fin part and a fourth fin part, the third fin part is wrapped on a part of the first U-shaped tube group, the fourth fin part is wrapped on the rest part of the first U-shaped tube group, the third fin part is positioned between the second fin part and the fourth fin part, the second interface is positioned at the third fin part, and the first interface is positioned at the fourth fin part; the third fin portion and the fourth fin portion are provided in a split manner.

From the above, through the structural design to first fin group for first heat exchanger can laminate in the casing that is provided with the air conditioning indoor set of this heat exchanger module better, optimize the structure of heat exchanger module.

In a further scheme, the heat exchanger module further comprises a first connecting pipe and a second connecting pipe, wherein the first end of the first connecting pipe is in butt joint with the first interface, and the second end of the second connecting pipe is in butt joint with the seventh interface; the number of the first U-shaped pipe group, the second U-shaped pipe group, the high-pressure straight pipes and the low-pressure straight pipes is two, the two first U-shaped pipe groups are arranged in parallel, the two second U-shaped pipe groups are arranged in parallel, the two high-pressure straight pipes are arranged in parallel, and the two low-pressure straight pipes are arranged in parallel.

From the above, through the quantity setting to first U type nest of tubes, second U type nest of tubes, high-pressure straight tube and low-pressure straight tube, can further improve the heat transfer effect of heat exchanger module, also improve the dehumidification effect of the indoor set of air conditioner that is provided with this heat exchanger module simultaneously.

In order to achieve the second object of the present utility model, the present utility model provides a heat exchange dehumidifying assembly, which comprises a dehumidifying control unit, wherein the heat exchange unit further comprises the heat exchanger module, and the dehumidifying control unit is respectively in butt joint with a fourth interface and a fifth interface.

Therefore, the heat exchange dehumidification assembly provided with the heat exchanger module solves the problem of mass production manufacturability of the traditional air conditioner indoor unit with the dehumidification function; meanwhile, the capillary tube of the dehumidification control unit is convenient to perform noise reduction treatment such as vibration reduction and sound insulation.

The dehumidification control unit comprises a capillary tube and a valve bank, wherein the first end of the capillary tube is in butt joint with the fourth interface, the second end of the capillary tube is in butt joint with the fifth interface, the valve bank is connected with the capillary tube in parallel, and the valve bank comprises a first unidirectional electromagnetic valve and a second unidirectional electromagnetic valve which are opposite in guide; the heat exchange dehumidification assembly further comprises a silencing unit, the silencing unit comprises a box body and a damping block, the box body is connected with the second side of the first heat exchanger and the second side of the second heat exchanger respectively, the box body is provided with a containing cavity, the damping block and the dehumidification control unit are both located in the containing cavity, and the damping block is wrapped on the capillary tube.

From the above, the box body of the silencing unit is used for wrapping the dehumidification control unit therein to play a certain role in sound insulation and noise reduction, and the damping block is wrapped on the capillary tube to absorb and eliminate jet vibration noise generated at the outlet end of the capillary tube, so that the experience of a user is improved.

Still further, the silencer unit further comprises a soundproof cotton arranged in the accommodating cavity, and the soundproof cotton is attached to at least part of the cavity wall of the accommodating cavity.

From the above, the noise generated by the capillary can be absorbed by the arrangement of the soundproof cotton, so that the soundproof noise reduction effect on the capillary is further improved.

Still further scheme is, the box body includes base and face lid, and the base is connected with first heat exchanger, second heat exchanger respectively, and face lid and base detachably are connected, enclose into between face lid and the base and hold the chamber, and the medial surface of at least one lateral wall of face lid is provided with the soundproof cotton.

Therefore, the design makes maintenance and replacement of the dehumidification control unit more convenient.

In a further scheme, the capillary tube is arranged in a variable diameter mode, the capillary tube is provided with a first section, a second section and a third section, the first section is connected between the fourth interface and the second section, the third section is connected between the fifth interface, and the first inner diameter of the first section and the third inner diameter of the third section are both larger than the second inner diameter of the second section; the first and third inner diameters are each between 2.5 mm and 3.5 mm and the second inner diameter is between 0.5 mm and 1.5 mm.

Therefore, the design can enable the flow section of the refrigerant to gradually change slowly so as to weaken or eliminate the air flow sound generated by the flow of the refrigerant, thereby achieving the effect of reducing the noise of the dehumidification control unit.

In order to achieve the third object of the utility model, the utility model provides an air conditioner indoor unit, which comprises a first shell, wherein an air outlet is arranged at the bottom of the first shell, and an air return opening is arranged at the top of the first shell, wherein the air conditioner indoor unit further comprises the heat exchange and dehumidification assembly, the heat exchange and dehumidification assembly is positioned in the first shell, a part of a first heat exchanger is positioned at the air outlet, and a second heat exchanger is arranged close to the air return opening.

From the above, the air conditioning indoor unit provided with the heat exchange dehumidification module solves the problem of mass production manufacturability of the traditional air conditioning indoor unit with the dehumidification function, and can absorb and eliminate jet vibration noise generated at the outlet end of the capillary tube, so that the experience of a user is improved.

In order to achieve the fourth object of the present utility model, the present utility model provides an air conditioner, comprising an air conditioner outdoor unit, wherein the air conditioner outdoor unit comprises a second casing, a four-way valve, a third heat exchanger and a compressor, the third heat exchanger and the four-way valve are all arranged in the second casing, a ninth interface of the four-way valve is connected with a tenth interface of the third heat exchanger, an eleventh interface of the four-way valve is connected with a twelfth interface of the compressor, a thirteenth interface of the four-way valve is connected with a fourteenth interface of the compressor, the air conditioner further comprises the air conditioner indoor unit, a fifteenth interface of the third heat exchanger is connected with a seventh interface, and a sixteenth interface of the four-way valve is connected with the first interface.

Therefore, the air conditioner with the air conditioner indoor unit solves the problem of mass production manufacturability of the traditional air conditioner with the dehumidification function, and can absorb and eliminate jet vibration noise generated at the outlet end of the capillary tube, so that the experience of a user is improved.

Drawings

Fig. 1 is a system block diagram in a thermal dehumidification mode with parts of components omitted in an embodiment of an air conditioner of the present utility model.

Fig. 2 is a block diagram of a heat exchange dehumidifying assembly according to an embodiment of the present utility model at a first view angle.

Fig. 3 is a partial construction view of a first omitted part of the heat exchange dehumidifying assembly according to the embodiment of the air conditioner of the present utility model.

Fig. 4 is a block diagram of a heat exchanger module in an embodiment of the air conditioner of the present utility model.

Fig. 5 is a block diagram of a heat exchanger module according to an embodiment of the present utility model, with parts of the components omitted.

Fig. 6 is a schematic structural view of a second fin group of a heat exchanger module according to an embodiment of the present utility model.

Fig. 7 is a block diagram of a heat exchange dehumidifying assembly according to an embodiment of the present utility model at a second view angle.

Fig. 8 is a partial construction view of a second omitted part of the heat exchange dehumidifying assembly according to the embodiment of the air conditioner of the present utility model.

Fig. 9 is an exploded view of an embodiment of the air conditioner of the present utility model with parts of the muffler unit omitted.

Fig. 10 is a block diagram of a system in a non-cooling dehumidifying mode after omitting a part of components according to an embodiment of the air conditioner of the present utility model.

The utility model is further described below with reference to the drawings and examples.

Detailed Description

Air conditioner embodiment

The air conditioner comprises an air conditioner indoor unit and an air conditioner outdoor unit. Referring to fig. 1, the indoor unit of the air conditioner comprises a first casing, a heat exchange dehumidification assembly 1 and cross-flow fan blades 2. The air conditioner outdoor unit comprises a second shell, a four-way valve 3, a compressor 4, a third heat exchanger 5, an electronic expansion valve 6, a two-way stop valve 7 and a three-way stop valve 8.

The bottom of first casing is provided with the air outlet, and the top of first casing is provided with the return air inlet, and heat exchange dehumidification assembly 1 and cross-flow fan blade 2 all set up in first casing, and the gyration axle center of cross-flow fan blade 3, the width direction of heat exchange dehumidification assembly 1 and the width direction of first casing are roughly parallel to each other.

Referring to fig. 2 and 3, the heat exchange and dehumidification assembly 1 includes a heat exchanger module 11, a dehumidification control unit 12, and a muffler unit 13. Referring to fig. 4 to 6, the heat exchanger module 11 includes a first heat exchanger 111, a second heat exchanger 112, a first connection pipe 113, and a second connection pipe 114. Wherein:

the first heat exchanger 111 includes a first hairpin tube set 1111, a high-pressure straight tube 1112, a low-pressure straight tube 1113, a first fin group 1114 and a second fin group 1115. The first fin group 1114 is wrapped around the first U-row tube group 1111, and preferably the first fin group 1114 includes a third fin portion 11141 and a fourth fin portion 11142, the third fin portion 11141 being included on a portion of the first U-row tube group 1111, and the fourth fin portion 11142 being included on the remaining portion of the first U-row tube group 1111. In the width direction of the heat exchanger module 11, the first interface 11111 and the second interface 11112 of the first U-bank 1111 are both located on the first side of the heat exchanger module 11, and the second interface 11112 is located at the third fin portion 11141, the first interface 11111 is located at the fourth fin portion 11142, and the width direction of the heat exchanger module 11 is the same as the width direction of the heat exchange and dehumidification assembly 1.

The second fin group 1115 includes a first fin portion 11151 and a second fin portion 11152 with a gap therebetween, and the second fin portion 11152 is located between the first fin portion 11151 and a third fin portion 11141, and the third fin portion 11141 is located between the second fin portion 11152 and a fourth fin portion 11142. The first fin portion 11151 and the second fin portion 11152 are preferably integrally formed, and the third fin portion 11141 and the fourth fin portion 11142 are preferably provided separately. Through the structural design to first fin group 1114 and second fin group 1115 for first heat exchanger 111 can better laminating in the inner wall of first casing, make the structure of air conditioner indoor set more optimize, reasonable.

Further, the first fin portion 11151 is wrapped around the high-pressure straight tube 1112, and the third port 11121 of the high-pressure straight tube 1112 is butted with the second port 11112 of the first hairpin tube 1111. The third interface 11121 is located on the first side of the heat exchanger module 11 in the width direction of the heat exchanger module 11, and the fourth interface 11122 of the high-pressure straight pipe 1112 is located on the second side of the heat exchanger module 11. The second fin portion 11152 is wrapped around the low-pressure straight tube 1113, and in the width direction of the heat exchanger module 11, the fifth interface 11131 of the low-pressure straight tube 1113 is located on the second side of the heat exchanger module 11, and the sixth interface 11132 of the low-pressure straight tube 1113 is located on the first side of the heat exchanger module 11.

The second heat exchanger 112 includes a second hairpin tube set 1121 and a third fin group 1122, the third fin group 1122 is wrapped around the second hairpin tube set 1121, the seventh port 11121 and the eighth port 11122 of the second hairpin tube set 1121 are both located on the first side of the heat exchanger module 11, and the eighth port 11122 is connected to the sixth port 11132 of the low-pressure straight tube 1113 through a third connection tube.

Through the structural design to heat exchanger module 11 for when heat exchanger module 11 is connected with dehumidification control unit 12, dehumidification control unit 12 and relevant connecting pipe can be located on the opposite both sides of first heat exchanger 111 respectively, and then avoid appearing structural interference between dehumidification control unit 12 and the connecting pipe, also make the assembly of dehumidification control unit 12 more convenient simultaneously, solve the mass production manufacturability problem that exists among the prior art. Further, by providing the gaps between the first fin portions 11151 and the second fin portions 11152 of the second fin group 1115, it is possible to avoid heat exchange between the high-pressure straight tube 1112 and the low-pressure straight tube 1113 through the first fin portions 11151 and the second fin portions 11152. Furthermore, the above design also allows the high pressure straight pipe 1112 to be immersed in condensed water generated by dehumidification, so that the high temperature and high pressure refrigerant exchanges heat with the low temperature condensed water, thereby increasing the supercooling degree of the high temperature and high pressure refrigerant, reducing the evaporation temperature of the low pressure refrigerant throttled by the capillary tube 121 of the dehumidification control unit 12, and increasing the dehumidification amount.

The first heat exchanger 111 and the through-flow fan blade 2 are both disposed at the air outlet of the first casing, so that the through-flow fan blade 2 can generate air flow and blow cool air or hot air sent out by the first heat exchanger 111 out of the air outlet, so as to realize cooling air outlet or heating air outlet of the indoor unit of the air conditioner, the second heat exchanger 112 is preferably disposed near the air return opening, so that the first heat exchanger 111 and the second heat exchanger 112 are disposed substantially semi-surrounding the through-flow fan blade 2, and the second heat exchanger 112 is located above the through-flow fan blade 2.

A first end of the first connecting pipe 113 is butted with a first interface 11111 of the first U-line tube group 1111, and a second end of the first connecting pipe 113 is connected with a sixteenth interface of the four-way valve 3; the three-way shut-off valve 8 is connected between the first connecting pipe 113 and the sixteenth port. The first end of the second connection tube 114 is docked with the seventh interface 11121 of the second U-shaped tube stack 1121, and the second end of the second connection tube 114 is connected with the fifteenth interface of the third heat exchanger 5. The electronic expansion valve 6 is connected between the fifteenth port and the second connection pipe 114, and the two-way shut-off valve 7 is connected between the second connection pipe 114 and the electronic expansion valve 6. In addition, when the indoor unit of the air conditioner performs a dehumidifying function, the electronic expansion valve 6 is in a fully opened state so that it does not throttle the refrigerant therein. Wherein the fourth inner diameter of the first connection pipe 113, the fifth inner diameter of the second connection pipe 114, the sixth inner diameter of the first U-shaped tube group 1111, the seventh inner diameter of the second U-shaped tube group 1121, the eighth inner machine of the high pressure straight tube 1112 and the ninth inner diameter of the low pressure straight tube 1113 are preferably each between 4 mm and 5 mm, and more preferably, the fourth inner diameter of the first connection pipe 113, the fifth inner diameter of the second connection pipe 114, the sixth inner diameter of the first U-shaped tube group 1111, the seventh inner diameter of the second U-shaped tube group 1121, the eighth inner machine of the high pressure straight tube 1112 and the ninth inner diameter of the low pressure straight tube 1113 are each 4.5 mm. Still more preferably, the number of the first U-shaped tube group 1111, the second U-shaped tube group 1121, the high-pressure straight tube 1112 and the low-pressure straight tube 1113 is two, the two first U-shaped tube groups 1111 are arranged in parallel, the two second U-shaped tube groups 1121 are arranged in parallel, the two high-pressure straight tubes 1112 are arranged in parallel, and the two low-pressure straight tubes 1113 are arranged in parallel; through the number setting to first U line nest of tubes 1111, second U type nest of tubes 1121, high pressure straight tube 1112 and low pressure straight tube 1113, can further improve the heat transfer effect of heat exchanger module 11, also improve the dehumidification effect of the indoor set of air conditioner that is provided with this heat exchanger module 11 simultaneously.

The dehumidification control unit 12 includes a capillary tube 121 and a valve block 122, a first end of the capillary tube 121 interfacing with a fifth interface 11131, and a second end of the capillary tube 121 interfacing with a fourth interface 11122. Valve block 122 is connected in parallel with capillary tube 121, wherein valve block 122 includes a first unidirectional solenoid valve 1221 and a second unidirectional solenoid valve 1222, the first unidirectional solenoid valve 1221 and the second unidirectional solenoid valve 1222 are oriented opposite, and first unidirectional solenoid valve 1221 and second unidirectional solenoid valve 1222 are connected in series. The first one-way solenoid valve 1221 is connected between the fifth interface 11131 and the second one-way solenoid valve 1222, and the second one-way solenoid valve 1222 is connected between the fourth interface 11122 and the first one-way solenoid valve 1221.

The first unidirectional electromagnetic valve 1221 has an energized state and a de-energized state, and when the first unidirectional electromagnetic valve 1221 is in the energized state, it can only unidirectional stop the flow of the refrigerant along the unidirectional stop direction thereof so as to ensure unidirectional circulation of the refrigerant; when the first one-way electromagnetic valve 1221 is in the power-off state, the first one-way electromagnetic valve 1221 is in the fully-on state, so that the flow of the refrigerant inside the first one-way electromagnetic valve 1221 is smooth. The second one-way solenoid valve 1222 has an energized state and a de-energized state, and when the second one-way solenoid valve 1222 is in the energized state, it can only one-way stop the flow of the refrigerant along its "one-way stop direction" to ensure the one-way circulation of the refrigerant; when the second one-way solenoid valve 1222 is in the de-energized state, the second one-way solenoid valve 1222 is in a fully conductive state, so that the flow of refrigerant therein is unobstructed.

Specifically, when the second one-way solenoid valve 1222 is in an energized state and the first one-way solenoid valve 1221 is in a de-energized state, the refrigerant flowing through the dehumidification control unit 12 flows through the capillary tube 121 to the second heat exchanger 112; when the first solenoid valve is in an energized state and the second solenoid valve is in a de-energized state, the refrigerant flowing through the dehumidification control unit 12 flows to the first heat exchanger 111 through the capillary tube 121.

Referring to fig. 7 to 9, the silencer unit 13 includes a case 131, a damping block 132, and a soundproof cotton 133, the case 131 is connected to the second side of the first heat exchanger and the second side of the second heat exchanger 112, respectively, and the case 131 has a housing chamber, the damping block 132 and the dehumidification control unit 12 are both located in the housing chamber, the damping block 132 is wrapped around the capillary tube 121, the soundproof cotton 133 is disposed in the housing chamber, and the soundproof cotton 133 is attached to at least a portion of the chamber wall of the housing chamber. The position of the dehumidification control unit 12, the position of each interface of the first U-shaped pipe group 1111 and the position of each interface of the second U-shaped pipe group 1121 are set, so that the dehumidification control unit 12 does not interfere with other components in a structure, the assembly of the dehumidification control unit 12 is more convenient, and the problem of mass production manufacturability of the existing air conditioner indoor unit with a dehumidification function is solved; at the same time, it is convenient to perform noise reduction processing such as vibration reduction and sound insulation on the capillary tube 121 of the dehumidification control unit 12. The box body 131 of the silencing unit 13 is used for wrapping the dehumidification control unit 12 therein to play a certain role in sound insulation and noise reduction, and the damping block 132 is wrapped on the capillary tube 121 to absorb and eliminate jet vibration noise generated at the outlet end of the capillary tube 121, so that the experience of a user is improved; the arrangement of the soundproof cotton 133 can absorb the noise generated by the capillary 121, so as to further improve the soundproof and noise-reducing effects on the capillary 121.

Preferably, the box 131 includes a base 1311 and a cover 1312, the base 1311 is connected to the first heat exchanger 11111 and the second heat exchanger 112, the cover 1312 is detachably connected to the base 1311, the cover 1312 and the base 1311 enclose the accommodating cavity, and the soundproof cotton 133 is disposed on an inner side surface of at least one side wall of the cover 1312. Through the structural design of the box body 131, the dehumidification control unit 12 is more convenient to maintain and replace. The capillary 121 is preferably provided in a variable diameter configuration, the capillary 121 having a first segment 12111311, a second segment 1212, and a third segment 1213, the first segment 1211 being connected between the fifth interface 11131 and the second segment 1212, and the third segment 1213 being connected between the fourth interface 11122 and the second segment 1212. The first inner diameter of the first segment 1211 and the third inner diameter of the third segment 1213 are both greater than the second inner diameter of the second segment 1212; wherein the first inner diameter and the third inner diameter are preferably each between 2.5 mm and 3.5 mm, and the second inner diameter is preferably between 0.5 mm and 1.5 mm; more preferably, the first inner diameter and the third inner diameter are each 3 mm and the second inner diameter is 0.5 mm to mm.

The four-way valve 3, the compressor 4, the third heat exchanger 5, the electronic expansion valve 6, the two-way shut-off valve 77 and the three-way shut-off valve 8 are preferably all disposed in the second casing. The fifth port 11131 of the four-way valve 3 is connected to the sixth port 11132 of the third heat exchanger 5, the seventh port 11121 of the four-way valve 3 is connected to the eighth port 11122 of the compressor 4, and the ninth port of the four-way valve 3 is connected to the tenth port of the compressor 4.

The air conditioner of the present embodiment has two dehumidification modes: the first is a dehumidification mode (thermal dehumidification) of the air conditioner in heating operation; the second is a dehumidification mode (no cooling and dehumidification) of the air conditioner in a cooling operation.

Referring to fig. 1, when the air conditioner performs heating operation dehumidification (heat dehumidification): the high-temperature high-pressure gas refrigerant discharged by the compressor 4 enters the first heat exchanger 111 to be condensed into liquid refrigerant, and releases heat to heat the air in the room where the indoor unit of the air conditioner is located; then, as the second unidirectional electromagnetic valve 1222 is switched to the power-on state and the first unidirectional electromagnetic valve 1221 is switched to the power-off state, the liquid refrigerant is transported through the branch where the capillary tube 121 is located, and the refrigerant in the liquid refrigerant is subjected to mute throttling through the capillary tube 121; then, the throttled low-pressure refrigerant flows into the second heat exchanger 112 to evaporate and absorb heat, so that a certain indoor air temperature is reduced to realize a dehumidification function. Wherein, after dehumidification and mixing, the indoor unit of the air conditioner finally blows hot air with the temperature about 3 ℃ to 5 ℃ higher than the indoor air temperature.

Referring to fig. 10, when the air conditioner performs a dehumidification mode (no cooling dehumidification) in a cooling operation: the high-temperature high-pressure gas refrigerant discharged by the compressor 4 enters the third heat exchanger 5 to be condensed into liquid refrigerant; then, as the electronic expansion valve 6 is completely opened and is not throttled, the liquid refrigerant enters the second heat exchanger 112 to carry out second condensation heat release; then, as the first unidirectional electromagnetic valve 1221 is adjusted to the power-on state and the second unidirectional electromagnetic valve 1222 is adjusted to the power-off state, the liquid refrigerant is transported through the branch where the capillary tube 121 is located, and the refrigerant in the liquid refrigerant is silently throttled through the capillary tube 121; finally, the throttled low-pressure refrigerant flows into the first heat exchanger 111 to evaporate and absorb heat, so that a certain indoor air temperature is reduced to realize a dehumidification function. Wherein, after dehumidification and mixing, the indoor unit of the air conditioner finally blows cool wind with the temperature of about 3 ℃ to 5 ℃ lower than the indoor air temperature.

In summary, the air conditioner provided by the utility model has the following advantages: firstly, through the structural design of the capillary tube 121, the flow cross section of the refrigerant is slowly and gradually changed, and the generation of air flow sound of the refrigerant flow is effectively avoided; secondly, the heat exchanger of the air conditioner indoor unit is divided into two parts (namely a first heat exchanger 111 and a second heat exchanger 112) which are connected in series, and the dehumidification control unit 12 is used for carrying out low-noise non-cooling dehumidification when the refrigerating system of the air conditioner is in refrigerating operation, and carrying out low-noise thermal dehumidification when the air conditioner is in heating operation (not only cooling in the dehumidification process, but also heating the room and eliminating abnormal noise of the indoor unit); thirdly, the noise existing in the dehumidification control unit 12 is further absorbed and eliminated through the silencing unit 13, so that the experience of a user is further improved; fourth, through the position design of the dehumidification control unit 12, the mass production manufacturability problem of the traditional air conditioner with the dehumidification function is effectively solved; fifth, the high pressure straight pipe 1112 can be immersed in condensed water generated by dehumidification, so that the high temperature and high pressure refrigerant exchanges heat with the low temperature condensed water, thereby increasing the supercooling degree of the high temperature and high pressure refrigerant, reducing the evaporation temperature of the low pressure refrigerant throttled by the capillary tube 121 of the dehumidification control unit 12, and increasing the dehumidification amount.

Finally, it should be emphasized that the foregoing description is merely illustrative of the preferred embodiments of the utility model, and that various changes and modifications can be made by those skilled in the art without departing from the spirit and principles of the utility model, and any such modifications, equivalents, improvements, etc. are intended to be included within the scope of the utility model.

Claims

1. The heat exchanger module, its characterized in that includes:

the first heat exchanger comprises a first U-shaped tube group, a high-pressure straight tube, a low-pressure straight tube, a first fin group and a second fin group, wherein the first fin group is wrapped on the first U-shaped tube group, a first interface and a second interface of the first U-shaped tube group are both positioned on a first side of the heat exchanger module in the width direction of the heat exchanger module, the second fin group comprises a first fin part and a second fin part, gaps are reserved between the first fin part and the second fin part, the second fin part is positioned between the first fin part and the first fin group, the first fin part is wrapped on the high-pressure straight tube, a third interface of the high-pressure straight tube is in butt joint with the second interface, the second fin part is wrapped on the low-pressure straight tube, and a fourth interface of the high-pressure straight tube and a fifth interface of the low pressure straight tube are both positioned on a second side of the heat exchanger module;

the second heat exchanger comprises a second U-shaped tube group and a third fin group, the third fin group is wrapped on the second U-shaped tube group, a seventh interface and an eighth interface of the second U-shaped tube group and a sixth interface of the low-pressure straight tube are all located on the first side of the heat exchanger module, and the sixth interface is connected with the eighth interface.

2. The heat exchanger module of claim 1, wherein:

the first fin group comprises a third fin portion and a fourth fin portion, the third fin portion is wrapped on a part of the first U-shaped tube group, the fourth fin portion is wrapped on the rest of the first U-shaped tube group, the third fin portion is located between the second fin portion and the fourth fin portion, the second interface is located at the third fin portion, and the first interface is located at the fourth fin portion;

the third fin portion and the fourth fin portion are provided in a split manner.

3. The heat exchanger module according to claim 1 or 2, wherein:

the heat exchanger module further comprises a first connecting pipe and a second connecting pipe, wherein the first end of the first connecting pipe is in butt joint with the first interface, and the second end of the second connecting pipe is in butt joint with the seventh interface;

the first U-shaped pipe group, the second U-shaped pipe group, the high-pressure straight pipe and the low-pressure straight pipe are two in number, the two U-shaped pipe groups are arranged in parallel, the second U-shaped pipe group is arranged in parallel, the two high-pressure straight pipe is arranged in parallel, and the two low-pressure straight pipe is arranged in parallel.

4. A heat exchange dehumidification assembly comprising a dehumidification control unit, and further comprising a heat exchanger module according to any one of claims 1 to 3, wherein the dehumidification control unit interfaces with the fourth interface and the fifth interface, respectively.

5. The heat exchange dehumidification assembly of claim 4, wherein:

the dehumidification control unit comprises a capillary tube and a valve bank, wherein the first end of the capillary tube is in butt joint with the fourth interface, the second end of the capillary tube is in butt joint with the fifth interface, the valve bank is connected with the capillary tube in parallel, and the valve bank comprises a first unidirectional electromagnetic valve and a second unidirectional electromagnetic valve which are opposite in guide;

the heat exchange dehumidification assembly further comprises a silencing unit, the silencing unit comprises a box body and a damping block, the box body is respectively connected with the second side of the first heat exchanger and the second side of the second heat exchanger, the box body is provided with a containing cavity, the damping block and the dehumidification control unit are both located in the containing cavity, and the damping block is wrapped on the capillary tube.

6. The heat exchange dehumidification assembly of claim 5, wherein:

the silencer unit further comprises soundproof cotton, the soundproof cotton is arranged in the accommodating cavity, and the soundproof cotton is attached to at least part of the cavity wall of the accommodating cavity.

7. The heat exchange dehumidification assembly of claim 6, wherein:

the box body includes:

the base is respectively connected with the first heat exchanger and the second heat exchanger;

the surface cover is detachably connected with the base, the accommodating cavity is formed by enclosing the surface cover and the base, and the inner side surface of at least one side wall of the surface cover is provided with the soundproof cotton.

8. The heat exchange dehumidification assembly of any one of claims 5 to 7, wherein:

the capillary tube is arranged in a variable diameter mode, the capillary tube is provided with a first section, a second section and a third section, the first section is connected between the fourth interface and the second section, the third section is connected between the fifth interface, and the first inner diameter of the first section and the third inner diameter of the third section are both larger than the second inner diameter of the second section;

the first and third inner diameters are each between 2.5 millimeters and 3.5 millimeters, and the second inner diameter is between 0.5 millimeters and 1.5 millimeters.

9. The utility model provides an indoor unit of air conditioner, includes first casing, the bottom of first casing is provided with the air outlet, the top of first casing is provided with return air inlet, its characterized in that:

the indoor unit of the air conditioner further comprises a heat exchange and dehumidification assembly according to any one of claims 4 to 8, wherein the heat exchange and dehumidification assembly is located in the first casing, a part of the first heat exchanger is located at the air outlet, and the second heat exchanger is arranged close to the air return opening.

10. The air conditioner comprises an air conditioner outdoor unit, the air conditioner outdoor unit comprises a second shell, a four-way valve, a third heat exchanger and a compressor, the third heat exchanger and the four-way valve are all arranged in the second shell, a ninth interface of the four-way valve is connected with a tenth interface of the third heat exchanger, an eleventh interface of the four-way valve is connected with a twelfth interface of the compressor, and a thirteenth interface of the four-way valve is connected with a fourteenth interface of the compressor, and the air conditioner is characterized in that:

the air conditioner further comprises the air conditioner indoor unit of claim 9, wherein a fifteenth port of the third heat exchanger is connected with the seventh port, and a sixteenth port of the four-way valve is connected with the first port.