CN210832606U - Air conditioner - Google Patents

Abstract

The utility model discloses an air conditioner, comprising: a first refrigerant circulation system includes: a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor and a first outdoor heat exchanger, and the first indoor unit includes The first indoor heat exchanger and the first indoor throttle device; the first exhaust pipe, the first intake pipe, the first pipe, and the second pipe; the second refrigerant circulation system includes: a second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor and a second outdoor heat exchanger, the second indoor unit includes a second indoor heat exchanger and a second indoor throttling device; a second exhaust pipe, a second suction pipe, The third pipe and the fourth pipe; the first communication pipe and the second communication pipe; the first control valve, and the first control valve is provided on the second pipe between the third connection point and the first intake pipe. The technical scheme of the utility model is beneficial to improve the utilization rate of the air conditioner.

Description

Air conditioner

technical field

The utility model relates to the technical field of air conditioners, in particular to an air conditioner.

Background technique

Due to the complexity of the weather, the air conditioner needs to have multiple functions at the same time to meet people's needs. For example, in order to overcome the weather with very high humidity, people need the air conditioner with dehumidification function. However, the existing air conditioners with dehumidification function cannot provide enough heat energy to maintain the indoor temperature while dehumidifying. To this end, an air conditioner with two sets of refrigerant circulation systems is proposed, but there is no interaction between the two sets of refrigerant circulation systems, which limits the multifunctional performance of the air conditioner.

Utility model content

The main purpose of the utility model is to provide an air conditioner, which aims to realize the refrigerant interaction between two sets of refrigerant circulation systems.

To achieve the above purpose, the air conditioner proposed by the present utility model includes:

A first refrigerant circulation system, the first refrigerant circulation system includes:

a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor and a first outdoor heat exchanger, the first indoor unit includes a first indoor heat exchanger and a first indoor throttling device;

The first exhaust pipe arranged at the discharge port of the first compressor, the first suction pipe arranged at the suction port of the compressor, and the first exhaust pipe, the first outdoor heat exchanger, and the first indoor section are connected in sequence. flow device, the first piping of the first indoor heat exchanger; the second piping connecting the first indoor heat exchanger and the first suction pipe;

The second refrigerant circulation system, the second refrigerant circulation system includes:

a second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor and a second outdoor heat exchanger, the second indoor unit includes a second indoor heat exchanger and a second indoor throttling device;

The second exhaust pipe arranged at the discharge port of the second compressor, the second suction pipe arranged at the suction port of the compressor, and the second suction pipe, the second outdoor heat exchanger, and the second indoor section are connected in sequence. flow device, the third piping of the second indoor heat exchanger; the fourth piping connecting the second indoor heat exchanger and the second exhaust pipe;

a first communication pipe, one end of the first communication pipe is connected with the first pipe at the first connection point, and the other end is connected with the third pipe at the second connection point;

a second communication pipe, one end of the second communication pipe is connected with the second pipe at the third connection point, and the other end is connected with the fourth pipe at the fourth connection point;

a first control valve, the first control valve is provided on the second pipe between the third connection point and the first suction pipe;

A thermal cycle device, which is used for sending the thermal energy or cold energy of the first indoor heat exchanger and the second indoor heat exchanger into the room.

Optionally, a fourth control valve is provided on the first piping between the first connection point and the first outdoor heat exchanger.

Optionally, the air conditioner further includes:

a fifth control valve, the fifth control valve is arranged on the third piping between the second connection point and the second outdoor heat exchanger;

A sixth control valve is provided on the fourth pipe between the fourth connection point and the second discharge pipe.

Optionally, the first connection point is located on the first piping between the first indoor throttle device and the first indoor heat exchanger.

Optionally, the second connection point is located on the third piping between the second indoor throttle device and the second indoor heat exchanger;

The air conditioner further includes a sixth control valve provided on the fourth pipe between the fourth connection point and the second discharge pipe.

Optionally, a second control valve is provided on the first connecting pipe; and/or,

A third control valve is arranged on the second connecting pipe.

Optionally, the first refrigerant circulation system further includes a first reversing device, and the first reversing device is arranged between the first exhaust pipe, the first piping, the second piping and the first suction pipe, so as to The first exhaust pipe is communicated with the first pipe, and the first intake pipe is communicated with the second pipe; or the first exhaust pipe is communicated with the second pipe, and the first intake pipe is communicated with the first pipe.

Optionally, the first refrigerant circulation system further includes: a first connecting pipe branched from the second piping, and a second connecting pipe branched from the first piping;

The first refrigerant circulation system further includes a plurality of first indoor units, and the plurality of first indoor units are connected in parallel to the first connection pipe and the second connection pipe.

Optionally, the air conditioner further includes a fourth control valve; the first connection pipe and the first piping are connected to a fifth connection point, and the fourth control valve is located in the pipe between the fifth connection point and the first connection point on the way.

Optionally, the second connection pipe and the second piping are connected to a sixth connection point, and the first control valve is located on the second piping line between the third connection point and the sixth connection point.

Optionally, the second refrigerant circulation system further includes a second reversing device, and the second reversing device is arranged between the second exhaust pipe, the third piping, the fourth piping and the second intake pipe, so as to The second exhaust pipe is communicated with the third pipe, and the second intake pipe is communicated with the fourth pipe; or the second exhaust pipe is communicated with the fourth pipe, and the second intake pipe is communicated with the third pipe.

Optionally, the second refrigerant circulation system further includes: a third connection pipe branched from the fourth pipe, and a fourth connection pipe branched from the third pipe;

The second refrigerant circulation system further includes a plurality of second indoor units, and the plurality of second indoor units are connected in parallel to the third connection pipe and the fourth connection pipe.

Optionally, the air conditioner further includes a fifth control valve and a sixth control valve;

The third connection pipe and the third piping are connected to a seventh connection point, and the fifth control valve is located on the pipeline between the seventh connection point and the second connection point; and/or,

The fourth connection pipe and the fourth piping are connected to an eighth connection point, and the sixth control valve is located on the fourth piping line between the fourth connection point and the eighth connection point.

The utility model further proposes an air conditioner, comprising:

A first refrigerant circulation system, the first refrigerant circulation system includes:

a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor and a first outdoor heat exchanger, the first indoor unit includes a first indoor heat exchanger and a first indoor throttling device;

The first exhaust pipe arranged at the discharge port of the first compressor, the first suction pipe arranged at the suction port of the compressor, and the first exhaust pipe, the first outdoor heat exchanger, and the first indoor section are connected in sequence. flow device, the first piping of the first indoor heat exchanger; the second piping connecting the first indoor heat exchanger and the first suction pipe;

The second refrigerant circulation system, the second refrigerant circulation system includes:

a second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor and a second outdoor heat exchanger, the second indoor unit includes a second indoor heat exchanger and a second indoor throttling device;

The second exhaust pipe arranged at the discharge port of the second compressor, the second suction pipe arranged at the suction port of the compressor, and the second suction pipe, the second outdoor heat exchanger, and the second indoor section are connected in sequence. flow device, the third piping of the second indoor heat exchanger; the fourth piping connecting the second indoor heat exchanger and the second exhaust pipe;

a first communication pipe, one end of the first communication pipe is connected with the first pipe at the first connection point, and the other end is connected with the third pipe at the second connection point;

a second communication pipe, one end of the second communication pipe is connected with the second pipe at the third connection point, and the other end is connected with the fourth pipe at the fourth connection point;

a fifth control valve, the fifth control valve is arranged on the third piping between the second connection point and the second outdoor heat exchanger;

a sixth control valve provided on the fourth pipe between the fourth connection point and the second discharge pipe;

A thermal cycle device, which is used for sending the thermal energy or cold energy of the first indoor heat exchanger and the second indoor heat exchanger into the room.

In the technical solution of the present invention, through the arrangement of the first communication pipe, the second communication pipe and the first control valve, the refrigerant in the second refrigerant circulation system can enter the first room through the second communication pipe from the first pipe for exchange. The heat exchanger flows back to the third pipe through the first communication pipe, so that the first indoor heat exchanger and the second indoor heat exchanger are heated at the same time after the second compressor works; in this way, the first refrigerant circulation system It is exchanged with the second refrigerant circulation system. When the first refrigerant circulation system fails, the first indoor heat exchanger can still be used by the second refrigerant circulation system, so as to improve the utilization rate of the indoor heat exchanger of the air conditioner. More functions of the air conditioner are realized, thus, it is beneficial to improve the utilization rate of the air conditioner and the ability to deal with emergencies.

Description of drawings

In order to more clearly illustrate the embodiments of the present utility model or the technical solutions in the prior art, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description These are just some embodiments of the present invention, and for those of ordinary skill in the art, other drawings can also be obtained based on the structures shown in these drawings without any creative effort.

Fig. 1 is the principle structure schematic diagram of the air conditioner of the utility model;

2 is a schematic structural diagram of the principle structure of an outdoor side heat exchanger in an embodiment of the air conditioner of the present invention;

3 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in an ordinary refrigeration mode;

4 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in a forced cooling mode;

FIG. 5 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in a common heating mode;

6 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in a forced heating mode;

7 is a schematic structural diagram of an embodiment of the air conditioner of the present invention in a heating and dehumidifying mode;

FIG. 8 is an enlarged structural schematic diagram of an embodiment at A in FIG. 7;

Fig. 9 is the enlarged schematic diagram of the B place in Fig. 7;

Figure 10 is an enlarged schematic view of the structure at C in Figure 7;

Fig. 11 is an enlarged schematic view of the structure at D in Fig. 7;

FIG. 12 is an enlarged schematic structural diagram of another embodiment at A in FIG. 7 .

Description of reference numbers:

The realization, functional characteristics and advantages of the purpose of the present utility model will be further described with reference to the accompanying drawings in conjunction with the embodiments.

Detailed ways

The technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, not all of them. Example. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work fall within the protection scope of the present invention.

It should be noted that all directional indications (such as up, down, left, right, front, back...) in the embodiments of the present invention are only used to explain the difference between the various components under a certain posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication also changes accordingly.

The specific structure of the air conditioner will be mainly described below.

1 to 6 , the entire pipeline structure and component arrangement of the air conditioner are first introduced; in an embodiment of the present utility model, the air conditioner includes:

The first refrigerant circulation system 100, the first refrigerant circulation system 100 includes:

A first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor 110 and a first outdoor heat exchanger 140, the first indoor unit includes a first indoor heat exchanger 150 and a first indoor section flow device;

The first exhaust pipe 111 provided at the discharge port of the first compressor 110, the suction pipe provided at the suction port of the compressor, and the first exhaust pipe 111, the first outdoor heat exchanger 140, the first The indoor throttle device, the first piping 130 of the first indoor heat exchanger 150; the second piping 160 connecting the first indoor heat exchanger 150 and the first suction pipe 170;

The second refrigerant circulation system 200, the second refrigerant circulation system 200 includes:

A second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor 210 and a second outdoor heat exchanger 240, the second indoor unit includes a second indoor heat exchanger 250 and a second indoor section flow device;

The second exhaust pipe 211 provided at the discharge port of the second compressor 210, the suction pipe provided at the suction port of the compressor, and the second suction pipe 270, the second outdoor heat exchanger 240, the second The indoor expansion device, the third piping 230 of the second indoor heat exchanger 250; the fourth piping 260 connecting the second indoor heat exchanger 250 and the second exhaust pipe 211;

A thermal cycle device, the thermal cycle device is used to send the thermal energy or cold energy of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 into the room.

Specifically, in this embodiment, in the first refrigerant circulation system 100, the first indoor throttling device 133 may be a throttle valve. Taking an electronic expansion valve or an electric valve as an example, the first indoor throttling device 133 can control the inflow or For the flow of refrigerant flowing out of the first indoor heat exchanger 150, the opening of the first indoor throttle device 133 is adjusted according to the amount of cooling or heat (user demand) that the first indoor heat exchanger 150 needs to release. After the refrigerant flows out from the first compressor 110 through the first exhaust pipe 111, it enters the first outdoor heat exchanger 140 to release heat, and then passes through the first indoor throttling device 133 and then enters the first indoor heat exchanger 150 for suction. After the heat and refrigerant are evaporated, they flow back to the compressor through the second pipe 160 and the first suction pipe 170 .

In the second refrigerant circulation system 200, the second indoor throttling device 233 may be a throttle valve. Taking an electronic expansion valve or an electric valve as an example, the second indoor throttling device 233 can control the flow into or out of the second indoor heat exchanger 250. The opening of the second indoor throttling device 233 is adjusted according to the amount of cooling or heat (user demand) that the second indoor heat exchanger 250 needs to release. After the refrigerant flows out from the second compressor 210 through the second exhaust pipe 211, it flows into the second indoor heat exchanger 250 through the fourth pipe 260, releases heat in the second indoor heat exchanger 250, and then passes through the second indoor heat exchanger 250. The throttling device 233 then enters the second outdoor heat exchanger 240 to absorb heat, and after the refrigerant is evaporated, it flows back into the compressor through the third pipe 230 and the second suction pipe 270 .

The air conditioner includes two independent refrigerant circulation systems. After the first compressor 110 operates, the first indoor heat exchanger 150 performs cooling, and after the second compressor 210 operates, the second indoor heat exchanger 250 performs heating. . Under the operation of the thermal cycle device, the cooling capacity of the first indoor heat exchanger 150 and the heat of the second indoor heat exchanger 250 are sent into the room. When the airflow passes through the first indoor heat exchanger 150, the water vapor in the air is condensed, thereby reducing the moisture in the air and improving the dryness of the air. Under the action of heat, the airflow increases the temperature. In this way, the dryness of the indoor air is improved, and both thermal energy and cold energy are received in terms of temperature. The air temperature can be adjusted according to the needs. If the indoor temperature needs to be increased during the dehumidification process, the operating frequency of the second compressor 210 can be increased, so as to increase the power of the second indoor heat exchanger 250, so that the second The heat released by the indoor heat exchanger 250 is greater than the cooling capacity released by the first heat exchanger; if it is only necessary to maintain the temperature during the dehumidification process, at this time, the heat released by the first indoor heat exchanger 150 can be used. The amount of cooling and the amount of heat released by the second indoor heat exchanger 250 are set to be comparable.

In this embodiment, the first indoor heat exchanger 150 performs dehumidification after the first compressor 110 operates, and the second indoor heat exchanger 250 provides thermal energy after the second compressor 210 operates, and then the first indoor heat exchanger 250 provides heat energy through the thermal cycle device. The cold energy generated by the heat exchanger 150 and the heat energy generated by the second indoor heat exchanger 250 are transported to the room. During the process of energy transfer, or after the energy is introduced into the room, the indoor air can be effectively dried and heated. Increase the temperature; since the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are in two independent refrigerant systems, the power consumption of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 Without affecting each other, the power of the first compressor 110 and the second compressor 210 can be adjusted separately according to the needs of the user to achieve dehumidification and reheating, even heating and dehumidification. Wet weather can also greatly improve the adaptability of the air conditioner.

It should be noted that the sizes of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 may be different or the same. When the two heat exchangers on the indoor side are of the same size, the size of the compressor used in each system can be comparable. In addition, the compressor specification at this time can be 20% to 50% smaller than the compressor of the unit with the same load. That is, in the case of the same load, the compressor at this time only needs 50% to 80%, which is much smaller than the compressor of the same load.

In some embodiments, for better mixing of the air passing through the first indoor heat exchanger 150 and the air passing through the second indoor heat exchanger 250, the air conditioner includes an indoor enclosure, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are arranged in the indoor casing.

Specifically, in this embodiment, by arranging the first indoor heat exchanger 150 and the second indoor heat exchanger 250 in the same indoor casing, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are respectively The generated cold energy and heat energy can quickly affect the heat exchanged air. At the same time, the compactness of the structure is effectively improved, and the space is fully utilized. There are many ways for heat energy or cold energy to enter the room. The air can directly pass through the first indoor heat exchanger 150 and the second indoor heat exchanger 250 in sequence, or pass through the second indoor heat exchanger 250 and the first indoor heat exchanger in sequence. Heat exchanger 150; it can also be mixed after passing through the first indoor heat exchanger 150 and the second indoor heat exchanger 250 respectively. Of course, the liquid passing through the indoor heat exchanger may also be liquid, and the liquid and the indoor heat exchanger will transfer cold energy or heat energy to the air after heat exchange.

Take the direct heat exchange between air and the indoor heat exchanger as an example. The indoor casing has an air inlet, an air outlet, and an air duct connecting the air inlet and the air outlet; the first indoor heat exchanger 150 and the second indoor heat exchanger 250 are arranged in the air duct; The circulation device includes a fan, and the fan is arranged in the air duct. The first indoor heat exchanger 150 and the second indoor heat exchanger 250 can be arranged in various ways in the air duct. The two can be arranged along the width or height of the air duct (up and down), or they can be extended along the air duct. Orientation arrangement. Taking the first indoor heat exchanger 150 disposed near the air inlet and the second indoor heat exchanger 250 disposed close to the air outlet as an example, in this way, the airflow first passes through the first indoor heat exchanger 150 for dehumidification, and then passes through The second indoor heat exchange is performed for heating and rewarming.

Of course, in some embodiments, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 may be located in different casings, respectively, and the fluids (air or liquid) after heat exchange between the two are mixed, or the fluids are sequentially Pass through the first indoor heat exchanger 150 and the second indoor heat exchanger 250 .

In some embodiments, in order to simplify the manufacturing process of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240, improve the manufacturing efficiency, and improve the exchange of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 Thermal efficiency.

The air conditioner includes an outdoor casing, and the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are disposed in the outdoor casing. The first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are disposed adjacent to each other, so that the first heat exchanger and the second heat exchanger can exchange heat with each other. When only one of the outdoor heat exchangers is working, the working heat exchanger can exchange heat through the other heat exchanger, which is beneficial to improve the heat exchange efficiency of the outdoor heat exchanger. When the working states of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are opposite, for example, the first outdoor heat exchanger 140 releases heat and the second outdoor heat exchanger 240 absorbs heat, at this time, the two can further mutually improve their heat exchange efficiency.

In some embodiments, in order to further improve the heat dissipation efficiency of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 . The first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are integrally arranged, and the refrigerant pipes of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are arranged in the same fin group. That is, when manufacturing the outdoor heat exchanger, the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 are manufactured as the same heat exchanger, and then some of the refrigerant pipes are divided into the first outdoor heat exchanger 140 , and another part of the refrigerant pipe is divided into a second outdoor heat exchanger 240 . The refrigerant pipes of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 share the same fin group, so that the refrigerant pipes of the first outdoor heat exchanger 140 and the refrigerant pipes of the second outdoor heat exchanger 240 can pass through all the The fins perform heat exchange, so that the heat exchange area between the first refrigerant pipe of the first outdoor heat exchanger 140 and the second refrigerant pipe of the second outdoor heat exchanger 240 is greatly increased. Rapid heat exchange can be performed between the two refrigerant tubes through fins, thereby greatly improving the heat exchange efficiency of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 .

In some embodiments, in order to further improve the heat exchange efficiency of the first outdoor heat exchanger 140 and the second outdoor heat exchanger 240 , the first outdoor heat exchanger 140 includes heat exchangers arranged along the height direction of the first heat exchanger A plurality of first refrigerant pipe sections 141; the second outdoor heat exchanger 240 includes a plurality of second refrigerant pipe sections 241 arranged along the height direction of the first heat exchanger; the first refrigerant pipe sections 141 and the second refrigerant pipe sections 241 are exchanged along the outdoor The height directions of the heaters are alternately set adjacent to each other. In this embodiment, a plurality of first refrigerant pipe sections 141 are spliced to form a first refrigerant pipe, and the first refrigerant pipe sections 141 are arranged along one of the height, length, and width directions of the first outdoor heat exchanger 140 to be arranged along the height direction thereof For example. The first refrigerant pipe section 141 is arranged horizontally or vertically, taking the horizontal arrangement as an example. Similarly, a plurality of second refrigerant pipe sections 241 are spliced to form a second refrigerant pipe, and the second refrigerant pipe sections 241 are arranged along one of the height, length, and width directions of the second outdoor heat exchanger 240, and the arrangement along the height direction is taken as an example . The second refrigerant pipe section 241 is arranged horizontally or vertically, taking the horizontal arrangement as an example. The projections of the first refrigerant pipe section 141 and the second refrigerant pipe section 241 on the horizontal plane may overlap, or may have a certain preset gap.

In some embodiments, in order to improve the adaptability of the air conditioner, it can realize not only dehumidification and reheating, normal cooling, normal heating, but also forced cooling, forced heating, and emergency response.

In the present invention, the first refrigerant circulation system 100 further includes a first reversing device 120, and the first reversing device 120 is provided with a first exhaust pipe 111, a first piping 130, a second piping 160 and a first Between the intake pipes 170, the first exhaust pipe 111 is communicated with the first pipe 130, and the first intake pipe 170 is communicated with the second pipe 160; or, the first exhaust pipe 111 is communicated with the second pipe 160, The first intake pipe 170 communicates with the first pipe 130 .

The first reversing device 120 may be a four-way valve, or may be a mechanism that can adjust the flow direction of the refrigerant. When the first exhaust pipe 111 directly communicates with the first indoor heat exchanger 150 through the second pipe 160, the first indoor heat exchanger 150 heats; When the outdoor heat exchanger 140 communicates with the first indoor heat exchanger 150, the first indoor heat exchanger 150 is cooled. Through the arrangement of the first reversing device 120, the cooling and heating states of the first indoor heat exchanger 150 can be freely switched, so that it can fully cooperate with the second indoor heat exchanger 250 to realize functions such as forced heating. .

In the present invention, the second refrigerant circulation system 200 further includes a second reversing device 220, and the second reversing device 220 is provided with a second exhaust pipe 211, a third piping 230, a fourth piping 260 and a second Between the intake pipes 270, the second exhaust pipe 211 is communicated with the third pipe 230, and the second intake pipe 270 is communicated with the fourth pipe 260; or, the second exhaust pipe 211 is communicated with the fourth pipe 260, The second intake pipe 270 communicates with the third pipe 230 .

The second reversing device 220 may be a four-way valve, or may be a mechanism that can adjust the flow direction of the refrigerant. When the second exhaust pipe 211 directly communicates with the second indoor heat exchanger 250 through the fourth pipe 260, the second indoor heat exchanger 250 produces heat; when the second exhaust pipe 211 passes through the third pipe 230 When the outdoor heat exchanger 240 communicates with the second indoor heat exchanger 250, the second indoor heat exchanger 250 is cooled. Through the arrangement of the second reversing device 220, the cooling and heating states of the second indoor heat exchanger 250 can be freely switched, so that it can fully cooperate with the first indoor heat exchanger 150 to realize functions such as forced cooling. .

When the first reversing device 120 and the second reversing device 220 are installed at the same time, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are two independent air conditioning systems with multiple functions, which can perform cooling and heating respectively. . When one of the systems fails and cannot work, the other system can immediately start to work as a backup system to run instead of the faulty system. Therefore, the dual-system air conditioner in the present application has a backup function, which can greatly improve the reliability of the service provided by the air conditioner. At the same time, it also provides users with more options for temperature requirements, such as forced cooling, forced heating, and so on.

In some embodiments, in order to improve the working stability and performance adjustment of the first refrigerant circulation system 100 and the second refrigerant circulation system 200 .

The first refrigerant circulation system 100 further includes a first outdoor throttling device 131, and the first outdoor throttling device 131 is provided on the first piping 130; and/or, the second refrigerant circulation system 200 further includes a first outdoor throttling device 131. Two outdoor expansion devices 231 are installed on the third piping 230 .

In order to better adjust the pressure and temperature of the refrigerant in the entire first refrigerant circulation system 100, the first refrigerant circulation system 100 further includes a first outdoor throttling device 131, and the first outdoor throttling device 131 is located in the first outdoor On the first piping 130 between the heat exchanger 140 and the first indoor heat exchanger 150 . The first outdoor throttling device 131 may only include the first outdoor electronic expansion valve, and in some embodiments, may also include the first shut-off valve. The first outdoor electronic expansion valve and the first shut-off valve are sequentially installed on the first piping 130 .

Similarly, in order to better adjust the pressure and temperature of the refrigerant in the entire second refrigerant circulation system 200, the second refrigerant circulation system 200 further includes a second outdoor throttling device 231, and the second outdoor throttling device 231 is located in the On the third piping 230 between the second outdoor heat exchanger 240 and the second indoor heat exchanger 250 . The second outdoor throttling device 231 may only include the second outdoor electronic expansion valve, and in some embodiments, may also include the second shutoff valve 161 . The second outdoor electronic expansion valve and the second shut-off valve 161 are provided on the third piping 230 in this order.

In some embodiments, in order to better adjust the working conditions of the refrigerant in the refrigerant circulation system, a third shut-off valve 232 and a fourth shut-off valve 261 are respectively provided on the second piping 160 and the fourth piping 260 .

In some embodiments, in order to ensure the stable operation of the first compressor 110 and the second compression, the first refrigerant circulation system 100 further includes a first gas-liquid separator 171, and the first gas-liquid separator 171 is disposed at On the first suction pipe 170 ; and/or, the second refrigerant circulation system 200 further includes a second gas-liquid separator 271 , and the second gas-liquid separator 271 is disposed on the second suction pipe 270 . A first gas-liquid separator 171 is provided on the first intake pipe 170 , and a second gas-liquid separator 271 is provided on the second intake pipe 270 . When the refrigerant enters the gas-liquid separator, the liquid refrigerant stays in the gas-liquid separator, and the gaseous refrigerant returns to the compressor for compression. In this way, the liquid refrigerant is prevented from entering the compressor, thereby avoiding liquid shock to the compressor during the compression process, which is beneficial to improve the service life and working stability of the compressor.

In some embodiments, in order to realize the interaction between the dual refrigerant systems, the components of the air conditioner are maximized, so that the air conditioner has more functions.

Air conditioner includes:

The first refrigerant circulation system 100, the first refrigerant circulation system 100 includes:

A first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor 110 and a first outdoor heat exchanger 140, the first indoor unit includes a first indoor heat exchanger 150 and a first indoor section flow device;

The first exhaust pipe 111 provided at the discharge port of the first compressor 110, the first suction pipe 170 provided at the suction port of the compressor, and the first exhaust pipe 111 and the first outdoor heat exchanger 140 are connected in sequence , the first indoor throttling device, the first piping 130 of the first indoor heat exchanger 150; the second piping 160 connecting the first indoor heat exchanger 150 and the first suction pipe 170;

The second refrigerant circulation system 200, the second refrigerant circulation system 200 includes:

A second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor 210 and a second outdoor heat exchanger 240, the second indoor unit includes a second indoor heat exchanger 250 and a second indoor section flow device 233;

The second discharge pipe 211 provided at the discharge port of the second compressor 210, the second suction pipe 270 provided at the suction port of the compressor, and the second suction pipe 270 and the second outdoor heat exchanger 240 are connected in sequence , the second indoor throttling device 233, the third piping 230 of the second indoor heat exchanger 250; the fourth piping 260 connecting the second indoor heat exchanger 250 and the second exhaust pipe 211;

The first communication pipe 510, one end of the first communication pipe 510 is connected with the first pipe 130 at the first connection point 610, and the other end is connected with the third pipe 230 at the second connection point 620;

the second communication pipe 520, one end of the second communication pipe 520 is connected with the second pipe 160 at the third connection point 630, and the other end is connected with the fourth pipe 260 at the fourth connection point 640;

a first control valve 310, the first control valve 310 is disposed on the second pipe 160 between the third connection point 630 and the first suction pipe 170;

A thermal cycle device, the thermal cycle device is used to send the thermal energy or cold energy of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 into the room.

Referring to FIG. 11 of the specification, in particular, in this embodiment, the first connection point 610 of the first communication pipe 510 and the first piping 130 can have many positions, so as to be close to the position of the first indoor heat exchanger 150 and located in the machine Inside the shell for example. It can be connected between the first indoor throttling device and the first indoor heat exchanger 150 , or can be connected to the end of the first indoor throttling device far away from the first indoor heat exchanger 150 . Similarly, there may be many positions of the second connection point 620 between the first communication pipe 510 and the third piping 230 , and a position close to the second indoor heat exchanger 250 and located in the casing is taken as an example. It can be connected between the second indoor throttling device 233 and the second indoor heat exchanger 250 , or can be connected to the end of the second indoor throttling device 233 away from the second indoor heat exchanger 250 .

There may be many positions of the third connection point 630 between the second communication pipe 520 and the second piping 160, and a position close to the first indoor heat exchanger 150 and located in the casing is taken as an example. Similarly, there may be many positions of the fourth connection point 640 between the second communication pipe 520 and the fourth pipe 260 , and a position close to the second indoor heat exchanger 250 and located in the casing is taken as an example.

There are many positions where the first control valve 310 can be installed. Take the first control valve 310 as an example, that is, the first control valve 310 can be installed in the casing of the indoor unit. Of course, it can also be installed in the outside of the enclosure. When the second compressor 210 operates, the high-temperature and high-pressure refrigerant enters the fourth pipe 260 from the second discharge pipe. After being split through the fourth connection point 640 , a part enters the first indoor heat exchanger 150 through the second communication pipe 520 , the third connection point 630 and the second piping 160 , and after passing through the first indoor heat exchanger 150 , passes through the first The connection point 610, the first communication pipe 510 and the second connection point 620 return to the third pipe 230, and return to the second compressor 210 along the third pipe 230; the other part enters the second room along the third pipe 230 for exchange. The heater 250 is returned to the second compressor 210 along the third piping 230 . At this time, the first control valve 310 is closed so that the refrigerant cannot flow back into the first compressor 110 along the second piping 160 .

In the technical solution of the present invention, through the arrangement of the first communication pipe 510, the second communication pipe 520 and the first control valve 310, the refrigerant in the second refrigerant circulation system 200 can pass through the second communication pipe 520 from the first piping 130. After entering the first indoor heat exchanger 150, it flows back to the third piping 230 through the first communication pipe 510, so that after the second compressor 210 works, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 Heating is performed at the same time; in this way, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are exchanged. When the first refrigerant circulation system 100 fails, the first indoor heat exchanger 150 can still be circulated by the second refrigerant. The system 200 is utilized to improve the utilization rate of the indoor heat exchanger of the air conditioner, thereby realizing more functions of the air conditioner, which is beneficial to improve the utilization rate of the air conditioner and the ability to deal with emergencies.

7 to 12 , in some embodiments, in order to improve the refrigerant pipeline and make full use of the air conditioner, the first communication pipe 510 is provided with a second control valve 320 ; and/or, the second communication pipe 520 is provided with a second control valve 320 . A third control valve 330 is provided.

In the following, the second control valve 320 is provided on the first communication pipe 510 and the third control valve 330 is provided on the second communication pipe 520 as an example for description.

When the second control valve 320 and the third control valve 330 are closed at the same time, the first communication pipe 510 and the second communication pipe 520 are disconnected. At this time, the first refrigerant circulation system 100 and the second refrigerant circulation system 200 are independent of each other. , the working condition of the first indoor heat exchanger 150 and the working condition of the second indoor heat exchanger 250 can be set as required. For example, in the absence of a four-way valve, the first indoor heat exchanger 150 cools and dehumidifies, and the second indoor heat exchanger 250 heats and reheats the air. In this way, dehumidification and reheating can be achieved without affecting the user experience. to remove water vapor from the air.

There are many ways to realize dual systems by setting control valves at different positions. In the following, without setting the four-way valve, the first outdoor heat exchanger 140 heats and the second outdoor heat exchanger 240 cools, and to name a few An example to illustrate:

10 , when there is no four-way valve, a fourth control valve 340 is provided on the first piping 130 between the first connection point 610 and the first outdoor heat exchanger 140 . Specifically, in this embodiment, the first control valve 310 and the fourth control valve 340 are closed, and the second control valve 320 and the third control valve 330 are opened (in the embodiment with the second control valve 320 and the third control valve 330 middle). When the second compressor 210 operates, the high-temperature and high-pressure refrigerant enters the fourth pipe 260 from the second discharge pipe. After being split through the fourth connection point 640 , a part enters the first indoor heat exchanger 150 through the second communication pipe 520 , the third connection point 630 and the second piping 160 , and after passing through the first indoor heat exchanger 150 , passes through the first The connection point 610, the first communication pipe 510 and the second connection point 620 return to the third pipe 230, and return to the second compressor 210 along the third pipe 230; the other part enters the second room along the third pipe 230 for exchange. The heater 250 is returned to the second compressor 210 along the third piping 230 . At this time, the first control valve 310 is closed, so that the refrigerant cannot flow back into the first compressor 110 along the second piping 160, and the fourth control valve 340 is closed, so that the refrigerant in the first compressor 110 cannot enter the first room for replacement. Heater 150 exchanges heat with the second chamber. In this way, the second refrigerant circulation system 200 is realized, and the first indoor heat exchange and the second indoor heat exchanger 250 are heated at the same time.

9, the air conditioner further includes: a fifth control valve 350, the fifth control valve 350 is provided on the third pipe 230 between the second connection point 620 and the second outdoor heat exchanger 240; a sixth A control valve 360, the sixth control valve 360 is provided on the fourth pipe 260 between the fourth connection point 640 and the second discharge pipe.

Specifically, in this embodiment, the fifth control valve 350 and the sixth control valve 360 are closed, and the first control valve 310, the second control valve 320 and the third control valve 330 are opened (in the case of the second control valve 320 and the third control valve 330) control valve 330 embodiment). When the first compressor 110 operates, the high-temperature and high-pressure refrigerant enters the first piping 130 from the first discharge pipe. After passing through the first outdoor heat exchanger 140 , the flow is split through the first connection point 610 , and a part of it enters the second indoor room through the first communication pipe 510 , the second connection point 620 , the third piping 230 and the second indoor throttle device 233 . The heat exchanger 250, after passing through the second indoor heat exchanger 250, returns to the second pipe 160 through the fourth connection point 640, the second communication pipe 520 and the third connection point 630, and returns to the first pipe along the second pipe 160. The other part enters the first indoor heat exchanger 150 along the first piping 130, and returns to the first compressor 110 along the second piping 160. At this time, the fifth control valve 350 is closed, so that the refrigerant cannot flow back into the second compressor 210 along the third piping 230, and the sixth control valve 360 is closed, so that the refrigerant in the second compressor 210 cannot enter the first room for replacement. Heater 150 exchanges heat with the second chamber. In this way, the first refrigerant circulation system 100 can simultaneously make the first indoor heat exchange and the second indoor heat exchanger 250 cool.

Referring to FIG. 12 , the first connection point 610 is located on the first piping 130 between the first indoor throttle device and the first indoor heat exchanger 150 .

Specifically, in this embodiment, referring to the above embodiment in which the fourth control valve 340 is provided, the first connection point 610 is set between the first indoor throttle device and the first indoor heat exchanger 150, so that the first indoor When the throttle device adjusts the opening degree to zero, it is equivalent to closing the fourth control valve 340 . In this way, in this embodiment, the fourth control valve 340 may not be provided, but the position of the first connection point 610 may be provided on the first piping 130 between the first indoor throttle device and the first indoor heat exchanger 150 . In this way, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 can also heat simultaneously.

12, the second connection point 620 is located on the third piping 230 between the second indoor throttle device 233 and the second indoor heat exchanger 250; the air conditioner further includes a sixth control valve 360, the sixth The control valve 360 is provided on the fourth pipe 260 between the fourth connection point 640 and the second discharge pipe.

Specifically, in this embodiment, referring to the above embodiment in which the fifth control valve 350 and the sixth control valve 360 are provided, the second connection point 620 is provided in the second indoor throttle device 233 and the second indoor heat exchanger 250 During this time, when the opening of the second indoor throttle device 233 is adjusted to zero, it is equivalent to closing the fifth control valve 350 . In this way, in this embodiment, the fifth control valve 350 may not be provided, but the position of the second connection point 620 may be provided in the fourth piping 260 between the second indoor expansion device 233 and the second indoor heat exchanger 250 superior. In this way, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 can also be cooled simultaneously.

In this way, in the case of one outdoor heat exchanger for cooling and another for heating, the two indoor heat exchangers can achieve various working conditions, such as simultaneous cooling and simultaneous heating, one for cooling and one for heating. The following will specifically introduce the situation when there are multiple indoor units.

In some embodiments, after the first connecting pipe 134 , the second connecting pipe 162 , the third connecting pipe 234 and the fourth connecting pipe 262 are provided, for a clearer description of the first control valve 310 , the fourth control valve 340 , the The positions of the fifth control valve 350 and the sixth control valve 360 are described below by setting the connection points.

The air conditioner further includes a fourth control valve 340; the first connection pipe 134 and the first piping 130 are connected to a fifth connection point 650, and the fourth control valve 340 is located between the fifth connection point 650 and the first connection point 610 on the pipeline between. In this embodiment, when a plurality of first indoor units are provided, that is, a plurality of first indoor heat exchangers 150 are provided, the plurality of first indoor heat exchangers are arranged in parallel on the first connecting pipe 134 and the second connecting pipe 162 , so that all the first indoor heat exchangers 150 can obtain the refrigerant from the first compressor 110 as required. On the basis that the first communication pipe 510 , the second communication pipe 520 , the first control valve 310 and the fourth control valve 340 are provided, the first indoor heat exchanger 150 can also receive the refrigerant from the second compressor 210 . Similarly, the second connecting pipe 162 and the second piping 160 are connected to the sixth connecting point 660 , and the first control valve 310 is located on the second piping between the third connecting point 630 and the sixth connecting point 660 . 160 pipeline.

Similarly, the air conditioner further includes a fifth control valve 350 and a sixth control valve 360; the third connecting pipe 234 and the third piping 230 are connected to a seventh connecting point 670, and the fifth control valve 350 is located at the seventh connecting point 670. On the pipeline between the seventh connection point 670 and the second connection point 620; and/or, the fourth connection pipe 262 and the fourth piping 260 are connected to the eighth connection point 680, and the sixth control valve 360 is located at the On the fourth piping 260 pipeline between the fourth connection point 640 and the eighth connection point 680 .

In this embodiment, when a plurality of second indoor units are provided, that is, a plurality of second indoor heat exchangers 250 are provided, the plurality of second indoor heat exchangers are arranged in parallel on the third connecting pipe 234 and the fourth connecting pipe 262 , so that all the second indoor heat exchangers 250 can obtain the refrigerant from the second compressor 210 as required. On the basis that the first communication pipe 510 , the second communication pipe 520 , the fifth control valve 350 and the sixth control valve 360 are provided, the second indoor heat exchanger 250 can also receive the refrigerant from the first compressor 110 .

When the combination of the first indoor unit and the second indoor unit exists at the same time, referring to FIG. 7 , without using the four-way valve, different needs of different rooms can be met, such as heating, cooling, and dehumidification of different users at the same time. reheating needs.

In some other embodiments, without the first control valve 310, the first indoor heat exchanger 150 and the second indoor heat exchanger 250 can be cooled simultaneously.

Specifically, an air conditioner includes: a first refrigerant circulation system 100, the first refrigerant circulation system 100 includes: a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor 110 and a The first outdoor heat exchanger 140, the first indoor unit includes a first indoor heat exchanger 150 and a first indoor throttling device; the first exhaust pipe 111 arranged at the discharge port of the first compressor 110 is arranged at The first suction pipe 170 of the suction port of the compressor, and the first pipe 130 connecting the first exhaust pipe 111, the first outdoor heat exchanger 140, the first indoor expansion device, and the first indoor heat exchanger 150 in this order The second piping 160 connecting the first indoor heat exchanger 150 and the first suction pipe 170; the second refrigerant circulation system 200, the second refrigerant circulation system 200 includes: a second indoor unit and a second outdoor unit, so The second outdoor unit includes a second compressor 210 and a second outdoor heat exchanger 240, the second indoor unit includes a second indoor heat exchanger 250 and a second indoor throttling device 233; The second exhaust pipe 211 of the discharge port, the second suction pipe 270 provided at the suction port of the compressor, and the second suction pipe 270, the second outdoor heat exchanger 240, and the second indoor throttle device are connected in sequence. 233. The third pipe 230 of the second indoor heat exchanger 250; the fourth pipe 260 connecting the second indoor heat exchanger 250 and the second exhaust pipe 211; the first communication pipe 510, one end of the first communication pipe 510 is connected to the The first pipe 130 is connected to the first connection point 610, and the other end is connected to the third pipe 230 to the second connection point 620; the second communication pipe 520, one end of the second communication pipe 520 is connected to the second pipe 160 to the third connection point 630, the other end is connected to the fourth connection point 640 with the fourth piping 260; the fifth control valve 350 is provided at the first connection point 620 between the second connection point 620 and the second outdoor heat exchanger 240 On the three piping 230; the sixth control valve 360, which is provided on the fourth piping 260 between the fourth connection point 640 and the second discharge pipe; the thermal cycler, which is used for The heat or cold energy of the first indoor heat exchanger 150 and the second indoor heat exchanger 250 is sent indoors.

When the first compressor 110 is working, the fifth control valve 350 and the sixth control valve 360 are closed, so that the second indoor heat exchanger 250 is disconnected from the second refrigerant circulation system 200, and the second indoor heat exchange is connected to the first The indoor heat exchanger 150 is connected to the first refrigerant circulation system 100 in parallel.

It should be noted that those skilled in the art can combine the technical solutions of this embodiment with the above embodiments to describe according to actual needs.

In some embodiments, the first refrigerant circulation system 100 further includes a plurality of first indoor units, and the heat exchangers included in each first indoor unit may be in different forms, for example, may include a common cooling/heating internal unit, or Including an indoor unit with a conversion device that can freely switch between cooling or heating states. In this way, the first refrigerant circulation system 100 can achieve mixed operation of cooling, heating, etc. on different indoor units at the same time.

Specifically, the first refrigerant circulation system 100 further includes: a first connecting pipe branched from the second pipe 160, and a second connecting pipe 162 branched from the first pipe 130; The refrigerant circulation system 100 further includes a plurality of first indoor units, and the plurality of first indoor units are connected in parallel to the first connection pipe and the second connection pipe 162 . In this way, a plurality of first indoor units in the first refrigerant circulation system 100 are connected in parallel, so that the first refrigerant circulation system 100 can simultaneously provide heat energy or cooling energy to a plurality of rooms.

Similarly, in some embodiments, the second refrigerant circulation system 200 further includes a plurality of second indoor units, and the heat exchangers included in each second indoor unit may be in different forms, such as a common cooling/heating internal unit. , and can also include an indoor unit with a conversion device that can freely switch between cooling or heating states. In this way, the second refrigerant circulation system 200 can achieve mixed operation of cooling, heating, etc. on different indoor units at the same time.

Specifically, the second refrigerant circulation system 200 further includes: a third connection pipe 234 branched from the fourth pipe 260, and a fourth connection pipe 262 branched from the third pipe 230; The secondary refrigerant circulation system 200 further includes a plurality of second indoor units, and the plurality of second indoor units are connected in parallel to the third connection pipe 234 and the fourth connection pipe 262 .

It is worth noting that all the first indoor units include the first indoor heat exchanger 150 and the first indoor throttle device, and the first indoor throttle device controls the working state of the first indoor heat exchanger 150. When an indoor throttle device is completely closed, the corresponding first indoor heat exchanger 150 stops working. Similarly, each second indoor throttling device controls the working state of the second indoor heat exchanger 250. When a certain second indoor throttling device is completely closed, the corresponding second indoor heat exchanger 250 stops working. In this way, each of the first indoor unit and the second indoor unit can be individually controlled, which is beneficial for different rooms to realize different working modes and provide users with personalized services.

The above are only preferred embodiments of the present utility model, and are not intended to limit the scope of the present utility model patent. Under the concept of the utility model of the present utility model, the equivalent structure transformations made by using the contents of the present utility model description and accompanying drawings, Or directly/indirectly applied in other related technical fields are included in the scope of patent protection of the present invention.

Claims (15)

1. An air conditioner, characterized in that, comprising: A first refrigerant circulation system, the first refrigerant circulation system includes: a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor and a first outdoor heat exchanger, the first indoor unit includes a first indoor heat exchanger and a first indoor throttling device; The first exhaust pipe arranged at the discharge port of the first compressor, the first suction pipe arranged at the suction port of the compressor, and the first exhaust pipe, the first outdoor heat exchanger, and the first indoor section are connected in sequence. flow device, the first piping of the first indoor heat exchanger; the second piping connecting the first indoor heat exchanger and the first suction pipe; The second refrigerant circulation system, the second refrigerant circulation system includes: a second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor and a second outdoor heat exchanger, the second indoor unit includes a second indoor heat exchanger and a second indoor throttling device; The second exhaust pipe arranged at the discharge port of the second compressor, the second suction pipe arranged at the suction port of the compressor, and the second suction pipe, the second outdoor heat exchanger, and the second indoor section are connected in sequence. flow device, the third piping of the second indoor heat exchanger; the fourth piping connecting the second indoor heat exchanger and the second exhaust pipe; a first communication pipe, one end of the first communication pipe is connected with the first pipe at the first connection point, and the other end is connected with the third pipe at the second connection point; a second communication pipe, one end of the second communication pipe is connected with the second pipe at the third connection point, and the other end is connected with the fourth pipe at the fourth connection point; a first control valve, the first control valve is provided on the second pipe between the third connection point and the first suction pipe; A thermal cycle device, which is used for sending the thermal energy or cold energy of the first indoor heat exchanger and the second indoor heat exchanger into the room. 2. The air conditioner according to claim 1, wherein a fourth control valve is provided on the first pipe between the first connection point and the first outdoor heat exchanger. 3. The air conditioner of claim 1, wherein the air conditioner further comprises: a fifth control valve, the fifth control valve is arranged on the third piping between the second connection point and the second outdoor heat exchanger; A sixth control valve is provided on the fourth pipe between the fourth connection point and the second discharge pipe. 4. The air conditioner according to claim 1, wherein the first connection point is located on the first piping between the first indoor expansion device and the first indoor heat exchanger. 5. The air conditioner according to claim 1, wherein the second connection point is located on the third piping between the second indoor throttle device and the second indoor heat exchanger; The air conditioner further includes a sixth control valve provided on the fourth pipe between the fourth connection point and the second discharge pipe. 6. The air conditioner according to any one of claims 1 to 5, wherein a second control valve is provided on the first communication pipe; and/or, A third control valve is provided on the second communication pipe. 7 . The air conditioner according to claim 1 , wherein the first refrigerant circulation system further includes a first reversing device, and the first reversing device is provided with a first exhaust pipe, a first piping, a first Between the two pipes and the first intake pipe, the first exhaust pipe is communicated with the first pipe, and the first intake pipe is communicated with the second pipe; or the first exhaust pipe is communicated with the second pipe, and the first The intake pipe communicates with the first piping. 8. The air conditioner of claim 1, wherein The first refrigerant circulation system further includes: a first connection pipe branched from the second pipe; and a second connection pipe branched from the first pipe; The first refrigerant circulation system further includes a plurality of first indoor units, and the plurality of first indoor units are connected in parallel to the first connection pipe and the second connection pipe. 9 . The air conditioner according to claim 8 , wherein the air conditioner further comprises a fourth control valve; the first connecting pipe and the first piping are connected to a fifth connection point, and the fourth control valve is located at the first connecting point. 10 . On the pipeline between the fifth connection point and the first connection point. 10 . The air conditioner according to claim 8 , wherein the second connecting pipe and the second piping are connected to a sixth connecting point, and the first control valve is located at a third connecting point and a sixth connecting point. 11 . on the second piping line between the points. 11 . The air conditioner according to claim 1 , wherein the second refrigerant circulation system further includes a second reversing device, and the second reversing device is provided with a second exhaust pipe, a third piping, a first Between the four pipes and the second intake pipe, the second exhaust pipe is communicated with the third pipe, and the second intake pipe is communicated with the fourth pipe; or the second exhaust pipe is communicated with the fourth pipe, and the second The intake pipe communicates with the third pipe. 12. The air conditioner of claim 1, wherein The second refrigerant circulation system further includes: a third connection pipe branched from the fourth pipe; and a fourth connection pipe branched from the third pipe; The second refrigerant circulation system further includes a plurality of second indoor units, and the plurality of second indoor units are connected in parallel to the third connection pipe and the fourth connection pipe. 13. The air conditioner of claim 12, wherein the air conditioner further comprises a fifth control valve and a sixth control valve; The third connection pipe and the third piping are connected to a seventh connection point, and the fifth control valve is located on the pipeline between the seventh connection point and the second connection point; and/or, The fourth connection pipe and the fourth piping are connected to an eighth connection point, and the sixth control valve is located on the fourth piping line between the fourth connection point and the eighth connection point. 14. The air conditioner according to claim 1, wherein a fourth control valve is provided on the first pipe between the first connection point and the first outdoor heat exchanger; and the first communication pipe is provided with a fourth control valve. There is a second control valve; and/or, a third control valve is arranged on the second communication pipe; The air conditioner also includes: a fifth control valve, the fifth control valve is arranged on the third piping between the second connection point and the second outdoor heat exchanger; A sixth control valve is provided on the fourth pipe between the fourth connection point and the second discharge pipe. 15. An air conditioner, comprising: A first refrigerant circulation system, the first refrigerant circulation system includes: a first indoor unit and a first outdoor unit, the first outdoor unit includes a first compressor and a first outdoor heat exchanger, the first indoor unit includes a first indoor heat exchanger and a first indoor throttling device; The first exhaust pipe arranged at the discharge port of the first compressor, the first suction pipe arranged at the suction port of the compressor, and the first exhaust pipe, the first outdoor heat exchanger, and the first indoor section are connected in sequence. flow device, the first piping of the first indoor heat exchanger; the second piping connecting the first indoor heat exchanger and the first suction pipe; The second refrigerant circulation system, the second refrigerant circulation system includes: a second indoor unit and a second outdoor unit, the second outdoor unit includes a second compressor and a second outdoor heat exchanger, the second indoor unit includes a second indoor heat exchanger and a second indoor throttling device; The second exhaust pipe arranged at the discharge port of the second compressor, the second suction pipe arranged at the suction port of the compressor, and the second suction pipe, the second outdoor heat exchanger, and the second indoor section are connected in sequence. flow device, the third piping of the second indoor heat exchanger; the fourth piping connecting the second indoor heat exchanger and the second exhaust pipe; a first communication pipe, one end of the first communication pipe is connected with the first pipe at the first connection point, and the other end is connected with the third pipe at the second connection point; a second communication pipe, one end of the second communication pipe is connected with the second pipe at the third connection point, and the other end is connected with the fourth pipe at the fourth connection point; a fifth control valve, the fifth control valve is arranged on the third piping between the second connection point and the second outdoor heat exchanger; a sixth control valve provided on the fourth pipe between the fourth connection point and the second discharge pipe; A thermal cycle device, which is used for sending the thermal energy or cold energy of the first indoor heat exchanger and the second indoor heat exchanger into the room.

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