CN215597814U - Air conditioner - Google Patents

Abstract

The application relates to the technical field of air conditioners and discloses an air conditioner. The application provides an air conditioner includes main pipeline, branch pipeline and bypass line. The main pipeline comprises a compressor, a four-way valve, an outdoor heat exchanger and a first heat exchange pipe of the heat exchange unit which are connected in sequence; the branch pipeline comprises a latent heat treatment device, and two ends of the branch pipeline are connected with the outdoor heat exchanger and a first air suction port of the compressor; the bypass pipeline comprises a circulation loop formed by the sensible heat treatment device and a second heat exchange pipe of the heat exchange unit; the first heat exchange tube and the second heat exchange tube exchange heat through the heat exchange unit, and the first heat exchange tube is connected with a second air suction port of the compressor. The double-suction-port compressor enables the heat transfer working medium with low evaporation temperature to remove the moisture load through the latent heat processing device and enables the heat transfer working medium with high evaporation temperature to remove the heat load through the sensible heat processing device. Through independent processing of damp and hot loads, the problem that the temperature of fresh air is low after cooling and dehumidification is avoided, the system energy efficiency is effectively improved, and the energy consumption is reduced.

Description

Air conditioner

Technical Field

The present application relates to the field of air conditioners, and, for example, to an air conditioner.

Background

With the improvement of living standard, the air conditioner becomes an indispensable household appliance for improving the quality of life, and the application is wide. In order to meet the requirement of people on indoor temperature regulation and control and simultaneously meet the requirement on indoor humidity regulation, the air conditioner mostly adopts a cooling and dehumidifying mode.

The heat load is divided into sensible heat and latent heat, and the refrigerating capacity of the air conditioner is the combination of latent heat and sensible heat in the regulation treatment. Sensible heat is heat which is required to be released or absorbed when the temperature is reduced or increased in the process of cooling or heating the heat transfer working medium but the original phase state of the heat transfer working medium is not changed. Sensible heat is usually measured with a thermometer. Latent heat is the heat released or absorbed by the heat transfer medium when it changes phase and is at a constant temperature. In short, the energy consumed to remove the excess moisture content of the air is the latent heat. Sensible heat is used to handle the room heat load and latent heat is used to handle the room moisture load.

The principle of the traditional air conditioner is to reduce the air temperature to the dew point for dehumidification through the refrigeration of an evaporator, but the air treatment temperature must be reduced to the air dew point temperature, and the temperature of the treated fresh air is lower. The conventional air conditioner is configured to simultaneously process a heat load and a humidity load by one evaporator.

In the process of implementing the embodiments of the present disclosure, it is found that at least the following problems exist in the related art:

because the traditional air conditioner aims at achieving the dehumidification purpose, the evaporation temperature is usually very low, the system energy efficiency is low, cold/heat in exhaust air is not recovered, and the energy waste is large.

SUMMERY OF THE UTILITY MODEL

The following presents a simplified summary in order to provide a basic understanding of some aspects of the disclosed embodiments. This summary is not an extensive overview nor is intended to identify key/critical elements or to delineate the scope of such embodiments but rather as a prelude to the more detailed description that is presented later.

The embodiment of the disclosure provides an air conditioner to solve and avoided cooling dehumidification back new trend temperature on the low side, made the not good problem of user experience.

In some embodiments, an air conditioner includes a main duct, a branch duct, and a bypass duct. The main pipeline comprises a compressor, a four-way valve, an outdoor heat exchanger and a first heat exchange pipe of the heat exchange unit which are connected in sequence; the branch pipeline comprises a latent heat treatment device, and two ends of the branch pipeline are connected with the outdoor heat exchanger and a first air suction port of the compressor; the bypass pipeline comprises a circulation loop formed by a sensible heat treatment device and a second heat exchange pipe of the heat exchange unit which are connected in sequence; the first heat exchange tube and the second heat exchange tube of the heat exchange unit exchange energy through the heat exchange unit, and the first heat exchange tube of the heat exchange unit is connected with the second air suction port of the compressor.

In some alternative embodiments, the heat transfer working mediums circulating in the first heat exchange tube and the second heat exchange tube are different.

In some optional embodiments, the air conditioner further comprises a first valve body and a second valve body, wherein the first valve body is arranged at the inlet end of the latent heat treatment device, and the second valve body is arranged at the inlet end of the first heat exchange pipe.

In some optional embodiments, the air conditioner further comprises a circulating water pump, and the circulating water pump is arranged on the bypass pipeline.

In some optional embodiments, the circulating water pump is arranged between the second heat exchange pipe and the sensible heat treatment device.

In some alternative embodiments, the latent heat treatment device comprises a convective dehumidification coil.

In some alternative embodiments, the sensible heat treatment device comprises a sensible coil or a radiant heat sink.

In some optional embodiments, the air conditioner further includes a subcooler disposed between the outdoor heat exchanger and the branch line.

In some optional embodiments, the air conditioner further comprises a gas-liquid separator disposed at a suction port end of the compressor. The gas-liquid separator comprises a first gas-liquid separation pipe and a second gas-liquid separation pipe, two ends of the first gas-liquid separation pipe are respectively connected with the latent heat treatment device and a first air suction port of the compressor, and two ends of the second gas-liquid separation pipe are respectively connected with the first heat exchange pipe and a second air suction port of the compressor.

In some optional embodiments, the air conditioner further comprises a control part, and when the air conditioner operates in a refrigeration working condition, the control part controls the first valve body and the second valve body to be opened; or when the air conditioner operates in a heating working condition, the first valve body is controlled to be closed, and the second valve body is controlled to be opened.

The air conditioner provided by the embodiment of the disclosure can realize the following technical effects:

the air conditioner includes a main pipeline, a branch pipeline, and a bypass pipeline. The main pipeline comprises a compressor, a four-way valve, an outdoor heat exchanger and a first heat exchange pipe of the heat exchange unit which are connected in sequence; the branch pipeline comprises a latent heat treatment device, and two ends of the branch pipeline are connected with the outdoor heat exchanger and a first air suction port of the compressor; the bypass pipeline comprises a circulation loop formed by a sensible heat treatment device and a second heat exchange pipe of the heat exchange unit which are connected in sequence; the first heat exchange tube and the second heat exchange tube of the heat exchange unit exchange heat through the heat exchange unit, and the first heat exchange tube of the heat exchange unit is connected with the second air suction port of the compressor. The double-suction-port compressor can remove the moisture load of the heat transfer working medium with low evaporation temperature through the latent heat processing device, and remove the heat load of the heat transfer working medium with high evaporation temperature through the sensible heat tail end. In the air conditioner refrigeration process, through damp and hot load independent processing, the problem that fresh air temperature is low after cooling and dehumidifying, and user experience is not good is avoided, and system energy efficiency is effectively improved, and energy consumption is reduced.

The foregoing general description and the following description are exemplary and explanatory only and are not restrictive of the application.

Drawings

One or more embodiments are illustrated by way of example in the accompanying drawings, which correspond to the accompanying drawings and not in limitation thereof, in which elements having the same reference numeral designations are shown as like elements and not in limitation thereof, and wherein:

fig. 1 is a schematic structural diagram of an air conditioner provided in an embodiment of the present disclosure;

FIG. 2 is a schematic flow diagram illustrating latent heat handling capacity of an air conditioner under refrigeration conditions provided by an embodiment of the present disclosure;

FIG. 3 is a schematic flow path diagram of an air conditioner for handling sensible heat under a refrigeration condition according to an embodiment of the present disclosure;

FIG. 4 is a schematic flow path diagram of an air conditioner for handling sensible heat under a heating condition according to an embodiment of the disclosure;

fig. 5 is a schematic flow path diagram of a bypass line provided by an embodiment of the present disclosure.

Reference numerals:

1: a compressor; 2: an oil separator; 3: a four-way valve; 4: an outdoor heat exchanger; 5: a reservoir; 6: a subcooler; 7: a liquid pipe stop valve; 8: a second valve body; 9: a heat exchange unit; 10: a second gas-liquid separation pipe; 11: a first valve body; 12: a latent heat processing device; 13: a first gas-liquid separation tube; 14: a sensible heat treatment device; 15: and (4) a water circulating pump.

Detailed Description

So that the manner in which the features and elements of the disclosed embodiments can be understood in detail, a more particular description of the disclosed embodiments, briefly summarized above, may be had by reference to the embodiments, some of which are illustrated in the appended drawings. In the following description of the technology, for purposes of explanation, numerous details are set forth in order to provide a thorough understanding of the disclosed embodiments. However, one or more embodiments may be practiced without these details. In other instances, well-known structures and devices may be shown in simplified form in order to simplify the drawing.

The terms "first," "second," and the like in the description and in the claims, and the above-described drawings of embodiments of the present disclosure, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It should be understood that the data so used may be interchanged under appropriate circumstances such that embodiments of the present disclosure described herein may be made. Furthermore, the terms "comprising" and "having," as well as any variations thereof, are intended to cover non-exclusive inclusions.

In the embodiments of the present disclosure, the terms "upper", "lower", "inner", "middle", "outer", "front", "rear", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings. These terms are used primarily to better describe the disclosed embodiments and their examples and are not intended to limit the indicated devices, elements or components to a particular orientation or to be constructed and operated in a particular orientation. Moreover, some of the above terms may be used to indicate other meanings besides the orientation or positional relationship, for example, the term "on" may also be used to indicate some kind of attachment or connection relationship in some cases. The specific meanings of these terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art as appropriate.

In addition, the terms "disposed," "connected," and "secured" are to be construed broadly. For example, "connected" may be a fixed connection, a detachable connection, or a unitary construction; can be a mechanical connection, or an electrical connection; may be directly connected, or indirectly connected through intervening media, or may be in internal communication between two devices, elements or components. Specific meanings of the above terms in the embodiments of the present disclosure can be understood by those of ordinary skill in the art according to specific situations.

The term "plurality" means two or more unless otherwise specified.

In the embodiment of the present disclosure, the character "/" indicates that the preceding and following objects are in an or relationship. For example, A/B represents: a or B.

The term "and/or" is an associative relationship that describes objects, meaning that three relationships may exist. For example, a and/or B, represents: a or B, or A and B.

It should be noted that, in the case of no conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

Referring to fig. 1 to 5, an embodiment of the present disclosure provides an air conditioner.

The air conditioner provided by the embodiment of the disclosure comprises a main pipeline, a branch pipeline and a bypass pipeline. The main pipeline comprises a compressor 1, a four-way valve 3, an outdoor heat exchanger 4 and a first heat exchange pipe of a heat exchange unit 9 which are connected in sequence; the branch pipeline comprises a latent heat treatment device 12, and two ends of the branch pipeline are connected with the outdoor heat exchanger 4 and a first air suction port of the compressor 1; the bypass pipeline comprises a circulation loop formed by a sensible heat treatment device 14 and a second heat exchange pipe of the heat exchange unit 9 which are connected in sequence; the first heat exchange tube and the second heat exchange tube of the heat exchange unit 9 exchange heat through the heat exchange unit, and the first heat exchange tube of the heat exchange unit 9 is connected with the second air suction port of the compressor 1.

The double-suction-port compressor 1 can remove the moisture load of the heat transfer working medium with low evaporation temperature through the latent heat processing device 12, remove the heat load of the heat transfer working medium with high evaporation temperature through the sensible heat tail end, and improve the energy efficiency of the air conditioning system. After the heat transfer working medium processes the wet load from the low evaporation temperature latent heat processing device 12, the heat transfer working medium enters the high evaporation temperature side gas branch to be reheated to the low pressure side heat transfer working medium, and the system gas branch is a regenerative gas branch. When the air conditioner operates in a refrigeration working condition, the heat transfer working medium removes the humidity load of a room through the low evaporation temperature latent heat treatment device 12; the high evaporation temperature conducts the heat of the heat transfer working medium flowing through the first heat exchange pipe to the heat transfer working medium in the second heat exchange pipe through the first heat exchange pipe of the heat exchange unit 9, and further, the room heat load is removed through the high-temperature sensible heat treatment device 14 of the bypass pipeline. Because the air heat and humidity load is processed independently, the evaporation temperature of the air conditioner in the refrigeration process is higher, and the energy efficiency is saved.

Optionally, the heat transfer working mediums circulating in the first heat exchange tube and the second heat exchange tube are different. The heat transfer working medium circulating in the first heat exchange pipe is a refrigerant, and the heat transfer working medium circulating in the second heat exchange pipe is cold water. In the process of refrigeration, the air conditioner converts high-temperature refrigerants into high-temperature cold water through the water-cooling heat exchange unit 9 at high evaporation temperature, and removes heat load of a room through the high-temperature sensible heat device. The system air separation can be used for reheating the low-evaporation-temperature refrigerant and directly enters the first air suction port with the low evaporation temperature of the compressor 1. Sensible heat is removed by utilizing relatively high water temperature, the energy efficiency of the system unit is improved, and meanwhile, secondary refrigerant cold water in the heat exchange unit 9 is low in price, environment-friendly and energy-saving.

Optionally, the air conditioner further comprises a first valve body 11 and a second valve body 8, wherein the first valve body 11 is arranged at the inlet end of the latent heat treatment device 12, and the second valve body 8 is arranged at the inlet end of the first heat exchange pipe.

When the air conditioner operates in a refrigeration working condition, the compressor 1 exhausts air, and lubricating oil in a high-pressure refrigerant is separated through the oil separator 2. The gaseous refrigerant passes through the four-way valve 3 to the outdoor heat exchanger 4, and the gaseous refrigerant is cooled and condensed into a liquid refrigerant. And then flows into the accumulator 5, the accumulator 5 is mainly used for adapting to the demand of the supply quantity of the refrigerant due to the load change of the latent heat processing device 12 and the heat exchange unit 9, when the load is increased, the supply quantity is also increased, the refrigerant stored in the accumulator 5 can be used for supplying, and when the load is reduced, the redundant refrigerant can be temporarily stored in the accumulator 5. The refrigerant flowing out of the liquid accumulator 5 is divided into two flow paths, the first flow path flows through the second valve body 8 and the heat exchange unit 9 on the main pipeline, passes through the four-way valve 3 and finally flows into the second suction port of the compressor 1, the second flow path flows through the first valve body 11 and the latent heat processing device 12 on the branch pipeline and finally flows into the first suction port of the compressor 1, and the evaporation temperature of the second suction port is higher than that of the first suction port.

Under the refrigeration working condition, the evaporation temperature of the heat exchange unit 9 is higher than the dew point temperature, the high-temperature refrigerant heat of the heat exchange unit 9 is conducted to high-temperature cold water, and the high-temperature cold water circularly flows in a bypass pipeline formed by a second heat exchange pipe of the heat exchange unit 9 and the sensible heat treatment device 14, so that the temperature of fresh air is reduced and the moisture content is unchanged; the evaporation temperature of the latent heat processing device 12 is lower than the dew point temperature, the moisture content is reduced, and the evaporation temperatures of the latent heat processing device 12 and the sensible heat processing device 14 can be adjusted by adjusting the first valve body 11 and the second valve body 8, so that the fresh air meets the air supply requirement set by a user.

When the air conditioner operates in a heating working condition, a refrigerant sequentially flows through an exhaust port of the compressor 1, the oil separator 2, the four-way valve 3, the first heat exchange tube of the heat exchange unit 9, the second valve body 8, the liquid storage device 5, the outdoor heat exchanger 4 and the four-way valve 3, and finally returns to the compressor 1 through a second air suction port of the compressor 1. The high-temperature refrigerant flowing through the first heat exchange pipe of the heat exchange unit 9 transfers heat to the hot water in the second heat exchange pipe, and the high-temperature hot water circularly flows in a circulating loop formed by the second heat exchange pipe and the sensible heat treatment device 14.

Under the refrigeration working condition, because the air damp and hot load is processed independently, the evaporation temperature in the refrigeration process of the corresponding air conditioner system is higher, and therefore the energy efficiency is saved. Under the heating condition, the air conditioner can heat the room only through the sensible heat treatment device 14, and the high comfort of unit heating is improved.

Optionally, the air conditioner further comprises a water circulation pump 15, and the water circulation pump 15 is disposed in the bypass line. The circulating water pump 15 is used for accelerating cold water flow, so that when the heat is transferred between the heat exchange unit and the sensible heat treatment tail end to carry out the working condition of refrigerating or heating a room by the air conditioner, the circulating water pump 15 is turned on, and the heat exchange unit 9 with high evaporation temperature conveys cold water to the sensible heat treatment device 14 through the circulating water pump 15 to treat heat load. The system air can be used for reheating an evaporation temperature refrigerant and directly enters a first air suction port with low evaporation temperature of the compressor 1.

Optionally, a circulating water pump 15 is disposed between the second heat exchange pipe and the sensible heat treatment device 14. When the indoor temperature needs to be adjusted, the refrigeration or heating working condition is operated, the circulating water pump 15 is started at the same time, heat flows through the heat exchange unit 9, the circulating water pump 15 and the sensible heat treatment device 14 along with cold water in sequence, and the heat exchange unit 9 with high evaporation temperature conveys the cold water to the sensible heat treatment device 14 through the circulating water pump 15 to treat heat load. The system air can be used for reheating an evaporation temperature refrigerant and directly enters a first air suction port with low evaporation temperature of the compressor 1.

Optionally, the latent heat treatment device 12 comprises a convective dehumidification coil. The convection dehumidification coil pipe cools or heats and dehumidifies fresh air or return air, and is mainly used for eliminating indoor latent heat to control indoor humidity.

Optionally, the sensible heat treatment 14 includes a sensible coil or a radiant heat sink. The sensible heat coil or the radiation heat dissipation device mainly eliminates indoor sensible heat to control indoor temperature.

Optionally, the air conditioner further includes a subcooler 6 disposed between the outdoor heat exchanger 4 and the branch line. The supercooling degree before throttling is maintained in a preset range by arranging the subcooler 6, and the stability of throttling can be maintained when the air conditioner operates in a refrigeration working condition, so that the throttling efficiency is improved, and the comfort level of an air conditioning system is improved.

Optionally, the air conditioner further comprises a gas-liquid separator, and the gas-liquid separator is arranged at the air suction end of the compressor 1. The gas-liquid separator comprises a first gas-liquid separation pipe 13 and a second gas-liquid separation pipe 10, two ends of the first gas-liquid separation pipe 13 are respectively connected with the latent heat treatment device 12 and a first air suction port of the compressor 1, and two ends of the second gas-liquid separation pipe 10 are respectively connected with a first heat exchange pipe and a second air suction port of the compressor 1. In the heat exchange unit 9 and the latent heat processing device 12, in the process of changing the liquid into gas by evaporation, the refrigerant may not be completely evaporated due to a load change, and the liquid may directly flow into the compressor 1. Therefore, a gas-liquid separator is required to perform gas-liquid separation to ensure that the refrigerant entering the double suction port compressor 1 is in a gaseous state, so that the compressor 1 can normally operate. By arranging two gas-liquid separation pipes in one gas-liquid separator, gas-liquid separation can be respectively and independently carried out on each branch refrigerant; meanwhile, compared with the arrangement of two gas-liquid separators, the single separator can save cost and space.

Optionally, the air conditioner further comprises a control part, and when the air conditioner operates in a refrigeration working condition, the control part controls the first valve body 11 and the second valve body 8 to be opened; or, when the air conditioner operates in a heating working condition, the first valve body 11 is controlled to be closed, and the second valve body 8 is controlled to be opened. Alternatively, the control portion may also control the opening or closing of the circulation water pump 15.

Specifically, when the air conditioner operates in a refrigeration working condition, the control part controls the first valve body 11, the second valve body 8 and the circulating water pump 15 to be opened. The gaseous refrigerant is discharged through an exhaust port of the compressor 1, and flows through the oil separator 2 to separate the lubricating oil in the high-pressure refrigerant. Then, the gaseous refrigerant flows into the outdoor heat exchanger 4 through the four-way valve 3, and the gaseous refrigerant is cooled and condensed into a liquid refrigerant. Then flows into the liquid storage device 5, the refrigerant flowing out of the liquid storage device 5 is divided into two flow paths, the first flow path flows through the second valve body 8 and the heat exchange unit 9 on the main flow path, finally flows into the second suction port of the compressor 1 through the four-way valve 3 and the second gas-liquid separation pipe 10, the second flow path flows through the first valve body 11 and the latent heat processing device 12 on the branch flow path, finally flows into the first suction port of the compressor 1 through the first gas-liquid separation pipe 13, and the evaporation temperature of the second suction port is higher than that of the first suction port.

Under the refrigeration working condition, the evaporation temperature of the heat exchange unit 9 is higher than the dew point temperature, the high-temperature refrigerant heat of the heat exchange unit 9 is conducted to high-temperature cold water, and the high-temperature cold water circularly flows in a bypass pipeline formed by a second heat exchange pipe of the heat exchange unit 9 and the sensible heat treatment device 14 through the circulating water pump 15, so that the temperature of fresh air is reduced, and the moisture content is unchanged; the evaporation temperature of the latent heat processing device 12 is lower than the dew point temperature, the moisture content is reduced, and the evaporation temperatures of the latent heat processing device 12 and the sensible heat processing device 14 can be adjusted by adjusting the first valve body 11 and the second valve body 8, so that the fresh air meets the air supply requirement set by a user.

When the air conditioner operates in a heating working condition, the control part controls the first valve body 11 to be closed, and the second valve body 8 and the circulating water pump 15 to be opened. The refrigerant flows through an exhaust port of the compressor 1, the oil separator 2, the four-way valve 3, a first heat exchange tube of the heat exchange unit 9, the second valve body 8, the liquid reservoir 5, the outdoor heat exchanger 4, the four-way valve 3 and the second gas-liquid separation tube 10 in sequence, and finally returns to the compressor 1 through a second suction port of the compressor 1. The high-temperature refrigerant flowing through the first heat exchange pipe of the heat exchange unit 9 transfers heat to the cold water in the second heat exchange pipe, and the high-temperature cold water circularly flows in a circulating loop formed by the second heat exchange pipe and the sensible heat treatment device 14 through the circulating water pump 15.

Under the heating condition, the air conditioner heats the room only through the sensible heat treatment device 14, so that the unit heating comfort is improved. Under the refrigeration working condition, because the air damp and hot load is processed independently, the evaporation temperature in the refrigeration process of the corresponding air conditioner system is higher, and therefore the energy efficiency is saved.

Alternatively, the first valve body 11 comprises a first electronic expansion valve and the second valve body 8 comprises a second electronic expansion valve. The refrigerant flowing out of the subcooler 6 is divided into two paths after passing through a liquid pipe stop valve 7: one path of the air flows through a second expansion valve and a heat exchange unit 9 and flows into a second air suction port of the compressor 1 through a second gas-liquid separation pipe 10 of the gas-liquid separator; the other path flows through the first expansion valve and the convection dehumidification coil and flows into the first air suction port of the compressor 1 through the first gas-liquid separation pipe 13 of the gas-liquid separator.

Specifically, one path of cold water enters the heat exchange unit 9 after being throttled and depressurized by the second electronic expansion valve, the refrigerant exchanges heat with cold water in the heat exchange unit 9 to absorb heat for evaporation, the cold water in the second heat exchange tube circularly flows in the heat exchange unit 9 and the sensible heat coil pipe through the circulating water pump 15, the high-temperature refrigerant in the heat exchange unit 9 conducts heat, the cold water cools the heat exchange unit 9, and then the high-temperature cold water is sent into the sensible heat coil pipe to process the heat load of a room. The other path enters a convection dehumidification coil pipe after being throttled and depressurized by a first electronic expansion valve, the temperature of a refrigerant in the convection dehumidification coil pipe is lower than that of a sensible heat coil pipe, and the humidity load of a room is removed through a low-temperature refrigerant air disc convection dehumidification coil pipe. Because the air damp and hot load is processed separately, the evaporation temperature in the refrigeration process of the corresponding air conditioner system is higher, thereby saving energy consumption. When the system heats, the sensible heat processing device 14 is independently used for heating rooms, and the heating comfort level is better. Where the sensible heat treatment device 14 is preferably a coil or radiant heat sink.

The above description and drawings sufficiently illustrate embodiments of the disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The examples merely typify possible variations. Individual components and functions are optional unless explicitly required, and the sequence of operations may vary. Portions and features of some embodiments may be included in or substituted for those of others. The embodiments of the present disclosure are not limited to the structures that have been described above and shown in the drawings, and various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims (10)

1. An air conditioner, comprising:

the main pipeline comprises a compressor, a four-way valve, an outdoor heat exchanger and a first heat exchange pipe of the heat exchange unit which are connected in sequence;

the branch pipeline comprises a latent heat treatment device, and two ends of the branch pipeline are respectively connected with the outdoor heat exchanger and a first air suction port of the compressor; and,

the bypass pipeline comprises a circulation loop formed by a sensible heat treatment device and a second heat exchange pipe of the heat exchange unit;

the first heat exchange tube of the heat exchange unit and the second heat exchange tube of the heat exchange unit exchange heat through the heat exchange unit, and the first heat exchange tube of the heat exchange unit is connected with the second air suction port of the compressor.

2. The air conditioner according to claim 1,

and the heat transfer working media circulating in the first heat exchange tube and the second heat exchange tube are different.

3. The air conditioner according to claim 1, further comprising:

a first valve body disposed at an inlet end of the latent heat processing device, and,

and the second valve body is arranged at the inlet end of the first heat exchange tube.

4. The air conditioner according to claim 1, further comprising:

and the circulating water pump is arranged on the bypass pipeline.

5. The air conditioner according to claim 4,

the circulating water pump is arranged between the second heat exchange pipe and the sensible heat treatment device.

6. The air conditioner according to claim 1,

the latent heat treatment device comprises a convection dehumidification coil.

7. The air conditioner according to claim 1,

the sensible heat treatment device comprises a sensible heat coil or a radiation heat dissipation device.

8. The air conditioner according to claim 1, further comprising:

and the subcooler is arranged between the outdoor heat exchanger and the branch pipeline.

9. The air conditioner according to any one of claims 1 to 8, further comprising:

a gas-liquid separator provided at a suction port end of the compressor, wherein the gas-liquid separator includes:

the two ends of the first gas-liquid separation pipe are respectively connected with the latent heat treatment device and a first air suction port of the compressor; and,

and two ends of the second gas-liquid separation pipe are respectively connected with the first heat exchange pipe and a second air suction port of the compressor.

10. The air conditioner according to claim 3, further comprising a control section for:

when the air conditioner operates in a refrigeration working condition, the first valve body and the second valve body are controlled to be opened; or,

and when the air conditioner operates in a heating working condition, the first valve body is controlled to be closed, and the second valve body is controlled to be opened.

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