WO2019000869A1

WO2019000869A1 - Air conditioning system and air conditioning system control method

Info

Publication number: WO2019000869A1
Application number: PCT/CN2017/117893
Authority: WO
Inventors: 屈金祥; 曾昭顺
Original assignee: 广东美的制冷设备有限公司; 美的集团股份有限公司
Priority date: 2017-06-30
Filing date: 2017-12-22
Publication date: 2019-01-03

Abstract

Provided are an air conditioning system (200) and an air conditioning system (200) control method. A compressor (210) is formed with a first air suction port (211), a second air suction port (214), an air supplementing port (213), a control port (215) and an exhaust port (212). The compressor (210) comprises a first cylinder (216) and a second cylinder (217). When the pressure of the control port (215) is greater than or equal to a preset pressure threshold, the compressor (210) operates in a two-cylinder mode; and when the pressure of the control port (215) is less than the pressure threshold, the compressor (210) operates in a single cylinder mode. A reversing assembly (220) is in communication with the control port (215). A flash evaporator (100) comprises two refrigerant ports (21, 22) and an air outlet (41). The two refrigerant ports (21, 22) are respectively communicated with a second port (232) of an outdoor heat exchanger (230) and a first port (241) of an indoor heat exchanger (240). The air outlet (41) is in communication with the air supplementing port (213).

Description

Air conditioning system and air conditioning system control method

Priority information

Priority is claimed on Japanese Patent Application No. JP-A No. Nos. Nos. Nos. Nos. Nos.

Technical field

The invention relates to the technical field of household appliances, and in particular to an air conditioning system and a control method of an air conditioning system.

Background technique

With the improvement of people's material life, air conditioners have become a necessity for people's lives. People also put forward higher requirements on the refrigeration capacity, heating capacity and energy efficiency of air conditioners. Traditional air conditioners can meet the general refrigeration and heating. Working conditions, but in high-temperature refrigeration, low-temperature heating conditions, the ability will be attenuated, and energy efficiency will also be worse.

Summary of the invention

Embodiments of the present invention provide an air conditioning system and a control method of an air conditioning system.

An air conditioning system according to an embodiment of the present invention includes:

a compressor having a first intake port, a second intake port, a supplemental port, a control port, and an exhaust port, the compressor including a first cylinder and a second cylinder, the first intake The port is connected to the first cylinder, and the second suction port is connected to the second cylinder. When the pressure of the control port is greater than the pressure of the second suction port, the compressor operates in the two-cylinder mode. When the pressure of the control port is less than or equal to the pressure of the second suction port, the compressor operates in a single cylinder mode;

a reversing assembly, the reversing assembly being in communication with the control port, the reversing assembly comprising a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port being selectable Optionally communicating the second valve port or the third valve port, the fourth valve port being capable of selectively communicating with the second valve port or the third valve port, the first valve port communicating The exhaust port, the fourth valve port is connected to the first air inlet and the second air inlet;

An outdoor heat exchanger and an indoor heat exchanger, wherein a first port of the outdoor heat exchanger communicates with the second valve port, and a second port of the outdoor heat exchanger communicates with the first port of the indoor heat exchanger a second port of the indoor heat exchanger communicates with the third valve port; and

a flasher, the flasher comprising two refrigerant ports and an air outlet, the two refrigerant ports respectively communicating with a second port of the outdoor heat exchanger and a first port of the indoor heat exchanger, the outlet The gas port is in communication with the gas supply port.

An air conditioning system according to another embodiment of the present invention includes:

a compressor capable of operating in a single cylinder mode or a two cylinder mode, the compressor being formed with a first intake port, a second intake port, a gas supply port, a control port, and an exhaust port, the compressor The first cylinder and the second cylinder are included, the first air inlet is connected to the first cylinder, and the second air inlet is connected to the second cylinder;

a reversing assembly including a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port being capable of selectively communicating with the second valve port or the a third valve port, the fourth valve port is capable of selectively communicating with the second valve port or the third valve port, the first valve port is connected to the exhaust port, and the fourth valve port is connected The first suction port and the second suction port, the control port can selectively communicate with the first valve port or the fourth valve port;

An outdoor heat exchanger and an indoor heat exchanger, wherein a first port of the outdoor heat exchanger communicates with the second valve port, and a second port of the outdoor heat exchanger communicates with the first port of the indoor heat exchanger The second port of the indoor heat exchanger is connected to the third valve port;

a flasher, the flasher comprising two refrigerant ports and an air outlet, the two refrigerant ports respectively communicating with a second port of the outdoor heat exchanger and a first port of the indoor heat exchanger, the outlet a gas port is connected to the gas supply port; and

a reversing valve, the reversing valve comprising a first port, a second port and a third port, wherein the first port communicates with the control port, the second port communicates with the first valve port, the third port a port communicating with the fourth valve port, the first port being capable of selectively communicating the second port or the third port, such that the control port can selectively communicate with the first valve port or a fourth valve port, when the control port is in communication with the fourth valve port, the compressor operates in the single cylinder mode, and when the control port is in communication with the first valve port, the compressor Working in the two-cylinder mode.

A method for controlling an air conditioning system according to an embodiment of the present invention is for controlling an air conditioning system, the air conditioning system comprising:

a compressor capable of operating in a single cylinder mode or a two cylinder mode, the compressor being formed with a first intake port, an exhaust port, a second intake port, a gas supply port, and a control port, the compressor The first cylinder and the second cylinder are included, the first air inlet is connected to the first cylinder, and the second air inlet is connected to the second cylinder;

a reversing valve, the reversing valve comprising a first port, a second port and a third port, wherein the first port communicates with the control port, the second port communicates with the first valve port, the third port a port communicating with the fourth valve port, the first port being capable of selectively communicating the second port or the third port, such that the control port can selectively communicate with the first valve port or a fourth valve port, when the control port is in communication with the fourth valve port, the compressor operates in the single cylinder mode, and when the control port is in communication with the first valve port, the compressor Working in the two-cylinder mode;

The control method includes:

Detecting a frequency of the compressor;

Controlling the first port to communicate with the third port to operate the compressor in the single cylinder mode when the frequency is less than a preset first frequency threshold; and

The first port is controlled to communicate with the second port to operate the compressor in the two-cylinder mode when the frequency is greater than or equal to a preset second frequency threshold.

In the above air conditioning system according to the embodiment of the present invention, the compressor can be switched in the single cylinder mode and the two cylinder mode according to the refrigerant pressure of the control port, and the flasher can increase the air supply of the compressor and improve the working condition of the air conditioning system. Cooling and heating capacity.

The additional aspects and advantages of the embodiments of the present invention will be set forth in part in the description which follows.

DRAWINGS

The above and/or additional aspects and advantages of the present invention will become apparent and readily understood from

1 to 6 are schematic diagrams showing states of an air conditioning system according to an embodiment of the present invention;

7 is a schematic flow chart of a control method of an air conditioning system according to an embodiment of the present invention;

Figure 8 is a schematic cross-sectional view of a flasher according to an embodiment of the present invention;

9 is a partial structural schematic view of an air outlet pipe of a flash evaporator according to an embodiment of the present invention;

10 is a schematic diagram showing the internal structure of an outdoor unit of an air conditioner according to an embodiment of the present invention;

Figure 11 is an enlarged schematic view showing a portion VII of the outdoor unit of the air conditioner of Figure 10;

12 and FIG. 13 are schematic perspective views of a flasher and a first damper element according to an embodiment of the present invention;

Figure 14 is an enlarged schematic view showing a portion X of the outdoor unit of the air conditioner of Figure 10;

Fig. 15 is a schematic perspective view showing a second damper element of the outdoor unit of the air-conditioning apparatus according to the embodiment.

Detailed ways

Embodiments of the present invention will be further described below in conjunction with the accompanying drawings. The same or similar reference numerals in the drawings denote the same or similar elements or elements having the same or similar functions.

In addition, the embodiments of the present invention described below in conjunction with the accompanying drawings are merely illustrative of the embodiments of the invention, and are not to be construed as limiting.

In the present invention, the first feature "on" or "under" the second feature may be a direct contact of the first and second features, or the first and second features may be indirectly through an intermediate medium, unless otherwise explicitly stated and defined. contact. Moreover, the first feature "above", "above" and "above" the second feature may be that the first feature is directly above or above the second feature, or merely that the first feature level is higher than the second feature. The first feature "below", "below" and "below" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely that the first feature level is less than the second feature.

Referring to FIGS. 1 and 2, an air conditioning system 200 of one embodiment of the present invention includes a compressor 210, a reversing assembly 220, an outdoor heat exchanger 230, an indoor heat exchanger 240, and a flasher 100.

The compressor 210 is formed with a first intake port 211, an exhaust port 212, a gas supply port 213, a second intake port 214, and a control port 215. The compressor 210 includes a first cylinder 216 and a second cylinder 217. The first intake port 211 communicates with the first cylinder 216, and the second intake port 214 communicates with the second cylinder 217. When the pressure of the control port 215 is greater than the pressure of the second intake port 214, the compressor 210 operates in the two-cylinder mode. When the pressure of the control port 215 is less than or equal to the pressure of the second intake port 214, the compressor 210 operates in the single cylinder mode.

The reversing assembly 220 includes a first valve port 221, a second valve port 222, a third valve port 223, and a fourth valve port 224. The first valve port 221 can selectively communicate with the second valve port 222 or the third valve port 223, and the fourth valve port 224 can selectively communicate with the second valve port 222 or the third valve port 223. The first valve port 221 communicates with the exhaust port 212, and the fourth valve port 224 communicates with the first intake port 211 and the second intake port 214.

The first port 231 of the outdoor heat exchanger 230 is connected to the second port 222, the second port 232 of the outdoor heat exchanger 230 is connected to the first port 241 of the indoor heat exchanger 240, and the second port 242 of the indoor heat exchanger 240 is connected. The third valve port 223.

The flasher 100 includes two refrigerant ports (a first refrigerant port 21, a second refrigerant port 33) and an air outlet 41. The two refrigerant ports (21, 33) are respectively exchanged with the second port 232 of the outdoor heat exchanger 230 and the indoor. The first port 241 of the heater 240 is in communication, and the air outlet 41 is in communication with the air supply port 213.

In the air conditioning system 200 provided by the embodiment of the present invention, the compressor 210 can be switched in the single cylinder mode and the two cylinder mode according to the refrigerant pressure of the control port 215, and the flasher 100 can supplement the air with the compressor 210 to improve the air conditioning system. 200 cooling capacity of all working conditions.

Referring again to FIGS. 1 and 2, in certain embodiments, the air conditioning system 200 further includes a first throttle element 250 and a second throttle element 260. The first throttle element 250 is coupled to the second port 232 of the outdoor heat exchanger 230 and a refrigerant port 21, and the second throttle element 260 is coupled to the first port 241 and the other refrigerant port 33 of the indoor heat exchanger 240.

Specifically, in some embodiments, the first throttle element 250 is an electronic expansion valve and the second throttle element 260 is one of a refrigeration spool, a heating spool, a capillary, and a thermal expansion valve.

In certain embodiments, the second throttle element 260 is an electronic expansion valve and the first throttle element 250 is one of a refrigeration spool, a heating spool, a capillary, and a thermal expansion valve.

In certain embodiments, the opening of the first throttle element 250 is less than the opening of the second throttle element 260 during cooling of the air conditioning system 200.

In certain embodiments, the opening of the second throttle element 260 is less than the opening of the first throttle element 250 when the air conditioning system 200 is heating.

Thus, by adjusting the opening fit of the first throttle element 250 and the second throttle element 260, the amount of air supplied from the flasher 100 to the compressor 210 is reasonable, and the energy efficiency of the air conditioning system 200 is further improved.

Specifically, when the air conditioning system 200 cools, the refrigerant flows through the first throttle element 250, the flasher 100, and the second throttle element 260, and the opening degree of the first throttle element 250 is smaller than the opening degree of the second throttle element 260. When the air conditioning system 200 is heating, the refrigerant flows through the second throttle element 260, the flasher 100, and the first throttle element 250, and the opening of the second throttle element 260 is smaller than the opening degree of the first throttle element 250. That is, the opening of the throttling device upstream of the flasher 100 is smaller than the opening of the throttling device downstream of the flasher 100, so that the pressure of the refrigerant can be decreased more before the refrigerant flows into the flasher 100, and the flow into the flasher is increased. The refrigerant in the gas phase of 100 enables the flasher 100 to separate a plurality of gaseous refrigerants and transfer them to the gas supply port 213.

Referring to FIG. 3 and FIG. 4, in some embodiments, the air conditioning system 200 further includes an electronically controlled heat exchanger 290 for heat exchange and electronically controlled heat exchange of the electronic control components of the air conditioning system 200. The 290 is coupled between the first throttle element 250 and the flasher 100. Alternatively, electrically controlled heat exchanger 290 is coupled between second throttle element 260 and flasher 100.

Specifically, the electronic control component of the air conditioning system 200 includes a frequency converter, and the electronic control component can be used to change the frequency at which the compressor 210 operates, the rotational speed of the heat dissipation fan, etc., and the electronic control component generates a large amount of heat during operation and the temperature rises, and the electronic control Excessive temperature of the components will reduce the accuracy of the control of the electronic components, and even increase the risk of ignition of the electronic components. The electrically controlled heat exchanger 290 reduces the temperature of the electronic control unit by transmitting the refrigerant and causing the refrigerant to undergo a phase change and absorb heat in the electronically controlled heat exchanger 290, thereby improving the stability of the operation of the electronic control unit.

Thus, regardless of whether the air conditioning system 200 is operating in a refrigeration cycle or a heating cycle, the refrigerant passing through the electrically controlled heat exchanger 290 passes through only one throttling element (the first throttling element 250 or the second throttling element 260), and is electronically controlled. The temperature in the heat exchanger 290 is not too low, and condensed water can be effectively prevented from forming on the surface of the electrically controlled heat exchanger 290.

Taking the electrically controlled heat exchanger 290 between the first throttle element 250 and the flasher 100 as an example, when the air conditioning system 200 is operating in the refrigeration cycle, the flow of the refrigerant is as follows: discharged from the exhaust port 212 of the compressor 210. The high temperature and high pressure refrigerant enters the outdoor heat exchanger 230 through the first valve port 221 and the second valve port 222 of the reversing assembly 220, and the refrigerant exchanges heat with the outdoor environment in the outdoor heat exchanger 230 from the outdoor heat exchanger. The second port 232 of 230 is discharged. Then, the discharged liquid refrigerant passes through the throttling and depressurization of the first throttle element 250, and the throttled refrigerant passes through the electronically controlled heat exchanger 290, and the gas-liquid two-phase refrigerant passing through the electronically controlled heat exchanger 290 passes from the first refrigerant port. 21 enters the flasher 100 and performs gas-liquid separation within the flasher 100. The gaseous refrigerant separated from the flasher 100 flows from the gas outlet 41 through the gas supply port 213 to the compressor 210, and is compressed and discharged from the exhaust port 212 of the compressor 210 to continue the circulation. The liquid refrigerant separated from the flasher 100 flows out of the refrigerant port 33, and then the refrigerant is throttled and depressurized by the second throttle element 260, and then enters the indoor heat exchanger 240. The refrigerant undergoes heat exchange with the indoor environment in the indoor heat exchanger 240 to undergo phase change, and cools the indoor environment. The gas phase refrigerant discharged from the indoor heat exchanger 240 passes through the third valve port 223 and the fourth valve of the reversing assembly 220. The port 224 is further introduced into the compressor 210 from the first intake port 211 and the second intake port 214 to complete the refrigeration cycle.

Taking the electrically controlled heat exchanger 290 between the first throttle element 250 and the flasher 100 as an example, when the air conditioning system 200 is operating in the heating cycle, the flow of the refrigerant is as follows: discharged from the exhaust port 212 of the compressor 210 The high temperature and high pressure gaseous refrigerant enters the indoor heat exchanger 240 through the first valve port 221 and the third valve port 223 of the reversing component 220, and the high temperature and high pressure refrigerant in the indoor heat exchanger 240 undergoes phase change heat with the indoor environment. To heat the indoor environment. The liquid phase refrigerant discharged from the indoor heat exchanger 240 is throttled for the first time by the second throttle element 260, and the throttled refrigerant passes through the electronically controlled heat exchanger 290 and passes through the gas-liquid two phase of the electronically controlled heat exchanger 290. The mixed refrigerant enters the flasher 100, and the flasher 100 performs gas-liquid separation of the refrigerant. The gaseous refrigerant separated from the flasher 100 flows from the gas outlet 41 through the gas supply port 213 to the compressor 210, and is compressed and discharged from the exhaust port 212 of the compressor 210 to continue the circulation. The liquid refrigerant separated from the flasher 100 flows out of the refrigerant port 21, is secondarily throttled and depressurized by the first throttle element 250, and then enters the outdoor heat exchanger 230, and the refrigerant evaporative heat exchange in the outdoor heat exchanger 230 Thereafter, the second valve port 222 and the fourth valve port 224 of the reversing unit 220 are introduced into the compressor 210 from the first intake port 211 and the second intake port 214 to complete the heating cycle.

It should be noted that, in the embodiment of the present invention, the refrigerant flowing from the control port 215 may be the back pressure provided for the second cylinder 217, that is, the pressure of the refrigerant discharged from the second cylinder 217 along with the control port 215 The refrigerant pressure increases and increases, and as the refrigerant pressure of the control port 215 decreases, the refrigerant flowing to the control port 215 may not flow into the second cylinder 217.

Referring again to FIG. 1, in some embodiments, the control port 215 is in communication with the second valve port 222. It can be understood that the second valve port 222 communicates with the first valve port 221 during the refrigeration cycle, and the refrigerant pressure of the first valve port 221 is the exhaust pressure of the compressor 210. The second suction port 214 communicates with the fourth valve port 224, and the pressure of the second suction port 214 is the return air pressure of the compressor 210. That is, when the air conditioning system 200 operates in the refrigeration cycle, the refrigerant pressure of the control port 215 is greater than the refrigerant pressure of the second intake port 214. At this time, the refrigerant of the second cylinder 217 needs to be compressed by the compressor 210 before flowing out. The two cylinders 217, that is, the second cylinder 217 participate in compression, and the compressor 210 operates in the two cylinder mode.

The second valve port 222 communicates with the fourth valve port 221 during the heating cycle, and the second air inlet port 214 communicates with the fourth valve port 224, that is, the refrigerant pressure of the control port 215 is equal to the refrigerant pressure of the second suction port 214. At this time, the compressor 210 does not need to compress the refrigerant flowing back from the second intake port 214, and the refrigerant entering the second cylinder 217 from the second intake port 214 is directly discharged from the second cylinder 217, that is, the second cylinder 217. Without participating in compression, compressor 210 operates in a single cylinder mode.

In this way, the cooling capacity of the air conditioning system 200 can be improved.

Referring again to FIG. 2, in some embodiments, the control port 215 is in communication with the third valve port 223. It can be understood that the third valve port 223 communicates with the first valve port 221 during the heating cycle, and the refrigerant pressure of the first valve port 221 is the exhaust pressure of the compressor 210. The second suction port 214 communicates with the fourth valve port 224, and the pressure of the second suction port 214 is the return air pressure of the compressor 210. That is, when the air conditioning system 200 operates in the heating cycle, the refrigerant pressure of the control port 215 is greater than the refrigerant pressure of the second intake port 214. At this time, the refrigerant of the second cylinder 217 needs to be compressed by the compressor 210 to flow out. The second cylinder 217, that is, the second cylinder 217 participates in compression, and the compressor 210 operates in the two-cylinder mode.

The third valve port 223 communicates with the fourth valve port 221 during the refrigeration cycle, and the second air inlet port 214 communicates with the fourth valve port 224, that is, the refrigerant pressure of the control port 215 is equal to the refrigerant pressure of the second intake port 214. At this time, the compressor 210 does not need to compress the refrigerant flowing back from the second intake port 214, and the refrigerant entering the second cylinder 217 from the second intake port 214 is directly discharged from the second cylinder 217, that is, the second cylinder 217. Without participating in compression, compressor 210 operates in a single cylinder mode.

In this way, the heating capacity of the air conditioning system 200 can be improved.

In actual production, whether the control port 215 is in communication with the second valve port 222 or the third valve port 223 may be selected depending on the specific sales or the climatic environment of the air-conditioning system 200. For example, when the target market of the air conditioning system 200 is mainly in the tropics, the control port 215 of the air conditioning system 200 can be communicated with the second valve port 222 during production to preferentially ensure that the air conditioning system 200 has better cooling capacity, and at the same time Has a certain heating capacity. When the target market of the air conditioning system 200 is mainly a cold zone, the control port 215 of the air conditioning system 200 can be communicated with the third valve port 223 during production to preferentially ensure that the air conditioning system 200 has better heating capability and at the same time A certain cooling capacity.

Referring to FIGS. 5 and 6, an air conditioning system 200 of another embodiment of the present invention includes a compressor 210, a reversing assembly 220, an outdoor heat exchanger 230, an indoor heat exchanger 240, a flasher 100, and a reversing valve 130.

The compressor 210 can operate in a single cylinder mode or a two cylinder mode. The compressor 210 is formed with a first intake port 211, an exhaust port 212, a gas supply port 213, a second intake port 214, and a control port 215. The compressor 210 includes a first cylinder 216 and a second cylinder 217. The first intake port 211 communicates with the first cylinder 216, and the second intake port 214 communicates with the second cylinder 217.

The reversing assembly 220 includes a first valve port 221, a second valve port 222, a third valve port 223, and a fourth valve port 224. The first valve port 221 can selectively communicate with the second valve port 222 or the third valve port 223, and the fourth valve port 224 can selectively communicate with the second valve port 222 or the third valve port 223. The first valve port 221 communicates with the exhaust port 212, and the fourth valve port 224 communicates with the first air inlet 211 and the second air inlet 214. The control port 215 can selectively communicate with the first valve port 221 or the fourth valve port 224. .

The reversing valve 130 includes a first port 132, a second port 133 and a third port 134. The first port 132 communicates with the control port 215, the second port 133 communicates with the first valve port 221, and the third port 134 communicates with the fourth port port 224. . The first port 132 can selectively communicate with the second port 133 or the third port 134 such that the control port 215 can selectively communicate with the first valve port 221 or the fourth valve port 224, the control port 215 and the fourth valve port 224 When communicating, the compressor 210 operates in the single cylinder mode, and when the control port 215 is in communication with the first valve port 221, the compressor 210 operates in the two cylinder mode.

In the air conditioning system 200 provided by the embodiment of the present invention, the compressor 210 can be switched in the single cylinder mode and the two cylinder mode according to working conditions, and the flasher 100 can supplement the air to the compressor 210 to improve the overall working condition of the air conditioning system 200. Cooling and heating capacity.

In some embodiments, the reversing valve 130 is a solenoid valve for communicating the first port 132 and the second port 133 when the power is off, and communicating the first port 132 and the third port 134 when energized. Alternatively, the solenoid valve is configured to communicate the first port 132 and the second port 133 when energized, and to communicate the first port 132 and the third port 134 when the power is off. As such, the reversing valve 130 is easily controlled to make the compressor 210 easy to switch between the single cylinder mode and the two cylinder mode.

In some embodiments, the reversing valve is a pressure control valve for communicating the first port 132 and the second port 133 under the action of the first pressure, and communicating the first port 132 with the second pressure. Three 134. Specifically, the pressure acting on the pressure control valve can be used to control the movement of the spool of the pressure control valve, the first pressure can be greater than the second pressure, and the first pressure can also be less than the second pressure.

Of course, it can be understood that the specific form of the reversing valve 130 is not limited to the above-exemplified solenoid valve and pressure control valve, and may be any switchably connected to the first port 132 and the second port 133, the first port 132 and the third port 134. Reversing valve 130.

Referring again to FIGS. 5 and 6, in certain embodiments, the air conditioning system 200 further includes a first throttle element 250 and a second throttle element 260. The first throttle element 250 is coupled to the second port 232 of the outdoor heat exchanger 230 and one of the refrigerant ports 21, and the second throttle element 260 is coupled to the first port 241 and the other refrigerant port 33 of the indoor heat exchanger 240.

Specifically, in certain embodiments, the first throttle element 250 and the second throttle element 260 can both be electronic expansion valves. As such, the first throttle element 250 and the second throttle element 260 can be used to adjust the pressure of the refrigerant flowing through the heat exchangers (230, 240) and the flasher 100, and by adjusting the first throttle element 250 and the second section The opening of the flow element 260 is such that the amount of gas supplied to the compressor 210 by the flasher 100 is within a reasonable range.

When the air conditioning system 200 is operating in the refrigeration cycle, the first valve port 221 of the reversing assembly 220 is electrically connected to the second valve port 222 and the fourth valve port 224 and the third valve port 223 are electrically connected.

When the air conditioning system 200 is operating in the refrigeration cycle, the flow direction of the refrigerant is as follows: the high temperature and high pressure refrigerant discharged from the exhaust port 212 of the compressor 210 enters the outdoor heat exchange through the first valve port 221 and the second valve port 222 of the reversing assembly 220. The condenser 230 is condensed, and the refrigerant is exchanged in the outdoor heat exchanger 230 from the outdoor environment and then discharged from the second port 232 of the outdoor heat exchanger 230. The discharged liquid phase refrigerant is then depressurized by the throttling of the first throttling element 250, and the throttled gas-liquid two-phase refrigerant enters the flasher 100 from the first refrigerant port 21 and is subjected to gas-liquid separation in the flasher 100. The gaseous refrigerant separated from the flasher 100 flows from the gas outlet 41 through the gas supply port 213 to the compressor 210, and after being compressed, is discharged from the exhaust port 212 of the compressor 210 to continue the circulation. The liquid refrigerant separated from the flasher 100 flows out of the refrigerant port 33, and then the refrigerant is throttled and depressurized by the second throttle element 260, and then enters the indoor heat exchanger 240. The refrigerant undergoes heat exchange with the indoor environment in the indoor heat exchanger 240 to undergo phase change, and cools the indoor environment. The gas phase refrigerant discharged from the indoor heat exchanger 240 passes through the third valve port 223 and the fourth valve of the reversing assembly 220. The port 224 is further introduced into the compressor 210 from the first intake port 211 and the second intake port 214 to complete the refrigeration cycle.

When the air conditioning system 200 is operating in the heating cycle, the first valve port 221 and the third valve port 223 of the reversing assembly 220 are conductive and the fourth valve port 224 is electrically connected to the second valve port 222.

When the air conditioning system 200 operates in the heating cycle, the flow direction of the refrigerant is as follows: the high temperature and high pressure gaseous refrigerant discharged from the exhaust port 212 of the compressor 210 enters the room through the first valve port 221 and the third valve port 223 of the reversing assembly 220. In the heat exchanger 240, the high-temperature and high-pressure refrigerant in the indoor heat exchanger 240 is phase-changed with the indoor environment to heat the indoor environment. The liquid phase refrigerant discharged from the indoor heat exchanger 240 is throttled for the first time by the second throttle element 260, and the throttled gas-liquid two-phase mixed refrigerant enters the flasher 100, and the flasher 100 performs gas-liquid on the refrigerant. Separation. The gaseous refrigerant separated from the flasher 100 flows from the gas outlet 41 through the gas supply port 213 to the compressor 210, and is compressed and discharged from the exhaust port 212 of the compressor 210 to continue the circulation. The liquid refrigerant separated from the flasher 100 flows out of the refrigerant port 21, is secondarily throttled and depressurized by the first throttle element 250, and then enters the outdoor heat exchanger 230, and the refrigerant evaporative heat exchange in the outdoor heat exchanger 230 Thereafter, the second valve port 222 and the fourth valve port 224 of the reversing unit 220 are introduced into the compressor 210 from the first intake port 211 and the second intake port 214 to complete the heating cycle.

Referring to FIG. 5, when the reversing valve 130 communicates with the first port 132 and the third port 134, the control port 215 communicates with the fourth port 224, and the fourth port 224 communicates with the second port 214, that is, It is said that the refrigerant pressure of the control port 215 is equal to the refrigerant pressure of the second intake port 214. At this time, the compressor 210 does not need to compress the refrigerant flowing back from the second intake port 214, and the refrigerant entering the second cylinder 217 from the second intake port 214 is directly discharged from the second cylinder 217, that is, the second cylinder 217. Without participating in compression, compressor 210 operates in a single cylinder mode.

Referring to FIG. 6 , when the reversing valve 130 communicates with the first port 132 and the second port 133 , the control port 215 communicates with the first valve port 221 , that is, the refrigerant pressure of the control port 215 is equal to the refrigerant pressure of the exhaust port 212 . The second suction port 214 is in communication with the fourth valve port 224, and the refrigerant pressure of the fourth valve port 224 is smaller than the refrigerant pressure of the exhaust port 212, that is, flowing back from the second suction port 214 to the second cylinder 217. The refrigerant pressure is less than the refrigerant pressure of the control port 215. At this time, the refrigerant of the second cylinder 217 needs to be compressed by the compressor 210 to flow out of the second cylinder 217, that is, the second cylinder 217 participates in compression, and the compressor 210 operates in the two-cylinder mode.

It should be noted that the compressor 210 can operate in a single cylinder mode or a two cylinder mode regardless of whether the air conditioning system 200 operates in a refrigeration cycle or a heating cycle to improve the cooling and heating capacity of the air conditioning system 200.

Referring again to FIGS. 5 and 6, in some embodiments, the air conditioning system 200 further includes a sensing component 270 and a controller 280. Detection element 270 is used to detect the frequency of compressor 210. The controller 280 is configured to control the first port 132 to communicate with the third port 134 to operate the compressor 210 in the single cylinder mode when the frequency is less than the preset first frequency threshold; and to use the frequency greater than or equal to the preset number The two frequency thresholds control the first port 132 to communicate with the second port 133 to operate the compressor in the two cylinder mode.

In addition, referring to FIG. 7, the control method of the air conditioning system 200 according to the embodiment of the present invention includes the following steps:

S10: detecting the frequency of the compressor 210;

S20: when the frequency is less than the preset first frequency threshold, controlling the first port 132 to communicate with the third port 134 to operate the compressor in the single cylinder mode;

S30: When the frequency is greater than or equal to the preset second frequency threshold, the first port 132 is controlled to communicate with the second port 133 to operate the compressor in the two-cylinder mode.

In the above air conditioning system 200 and the control method of the air conditioning system 200, by detecting the frequency of the compressor 210, when the frequency is greater than the second frequency threshold, the compressor 210 is operated in the two-cylinder mode, and the air conditioning system 200 is improved in rapid heating and rapid cooling. ability. And when the frequency is less than the first frequency threshold, the compressor 210 is operated in the two-cylinder mode, and the air conditioning system 200 is more energy efficient.

In some embodiments, the first frequency threshold is less than or equal to the second frequency threshold. That is, the frequency at which the compressor 210 operates in the two-cylinder mode is greater than the frequency at which the compressor 210 operates in the single-cylinder mode. Specifically, the first frequency threshold may be 33 Hz, 25 Hz, 20 Hz, etc., and the second frequency threshold may be 47 Hz, 50 Hz, 52 Hz, etc., the first frequency threshold and the second frequency threshold may be according to the compressor 210 Make a choice of kind.

Referring to FIG. 8 , in some embodiments, the flasher 100 includes a barrel 10 , a first refrigerant tube 20 , a second refrigerant tube 30 , and an outlet tube 40 . The first refrigerant pipe 20, the second refrigerant pipe 30, and the air outlet pipe 40 both extend into the cylinder 10.

The cylinder 10 is formed with a housing chamber 11. The air outlet pipe 40, the first refrigerant pipe 20, and the second refrigerant pipe 30 both extend into the receiving cavity 11. The cylinder 10 can be made of, for example, a corrosion-resistant material such as copper. Preferably, the cylinder 10 has a cylindrical shape. Of course, the cylindrical body 10 may have other shapes such as a square tube shape.

It can be understood that the cylinder 10 is formed with a through hole 15 for the air outlet pipe 40, the first refrigerant pipe 20 and the second refrigerant pipe 30 to protrude into the receiving cavity 11. The periphery of the perforation 15 is sealed with the air outlet pipe 40, the first refrigerant pipe 20, and the second refrigerant pipe 30 to prevent leakage of refrigerant in the cylinder 10.

The first refrigerant pipe 20 has a cylindrical shape, and the first refrigerant pipe 20 is made of, for example, a corrosion-resistant material such as copper. In some embodiments, the first refrigerant tube 20 has a cylindrical shape. It can be understood that in other embodiments, the first refrigerant tube 20 may have other shapes such as a square tube shape.

The first refrigerant pipe 20 extends from the bottom end 12 of the cylinder 10 into the accommodating chamber 11, and preferably, the axial direction of the first refrigerant pipe 20 is parallel or coincident with the axial direction of the cylinder 10. The first refrigerant pipe 20 is formed with a first refrigerant port 21 and a first refrigerant inlet 22. The first refrigerant port 21 is located outside the receiving cavity 11 , and the first refrigerant inlet 22 is located in the receiving cavity 11 . The first refrigerant inlet 22 communicates with the receiving chamber 11 and the first refrigerant port 21.

After the gas-liquid two-state refrigerant enters the accommodating chamber 11 from the first refrigerant port 21 through the first refrigerant inlet 22, the gaseous refrigerant is separated from the liquid refrigerant. The liquid refrigerant is located at the bottom of the cylinder 10, and the gaseous refrigerant is located at the top of the cylinder 10.

The first refrigerant inlet 22 is opened in the side wall of the first refrigerant pipe 20, and the first refrigerant inlets 22 are divided into a plurality of groups, and the plurality of sets of the first refrigerant inlets 22 are evenly spaced along the axial direction of the first refrigerant pipe 20. The plurality of sets of first refrigerant inlets 22 allow the refrigerant to quickly enter the containment chamber 11. In some embodiments, the number of the first refrigerant inlets 22 of each group is plural, and the plurality of first refrigerant inlets 22 of the same group are disposed along the circumferential interval of the first refrigerant tubes 20. Preferably, the plurality of first refrigerant inlets 22 of the same group are evenly spaced along the circumferential direction of the first refrigerant pipe 20. It will be appreciated that in other embodiments, the number of first refrigerant inlets 22 per group may be a single.

The second refrigerant pipe 30 has a cylindrical shape, and the second refrigerant pipe 30 is made of, for example, a corrosion-resistant material such as copper. In some embodiments, the second refrigerant tube 30 has a cylindrical shape. It can be understood that in other embodiments, the second refrigerant tube 30 may have other shapes such as a square tube shape. In the example of FIG. 8, the second refrigerant pipe 30 extends from the side wall 13 of the cylinder 10 into the receiving cavity 11, and the projecting end 31 of the second refrigerant pipe 30 is adjacent to the bottom end 12 of the cylinder 10. In the example of FIG. 13, the second refrigerant tube 30 extends from the bottom end 12 of the barrel 10 into the receiving chamber 11.

The second refrigerant pipe 30 is formed with a second refrigerant inlet 32 and a second refrigerant port 33. The second refrigerant inlet 32 is located in the housing chamber 11. The second refrigerant port 33 is located outside the housing chamber 11. The second refrigerant inlet 32 communicates with the receiving chamber 11 and the second refrigerant port 33. In this manner, the liquid refrigerant in the cylinder 10 can enter the second refrigerant pipe 30 from the second refrigerant inlet 32 and be discharged from the second refrigerant port 33 to the outside of the housing chamber 11.

In some embodiments, the number of the second refrigerant inlets 32 is plural, and the plurality of second refrigerant inlets 32 are evenly spaced along the circumferential direction of the second refrigerant tubes 30.

It should be noted that the refrigerant may flow into the accommodating chamber 11 from the first refrigerant port 21, and then sequentially flow through the first refrigerant inlet 22, the second refrigerant inlet 32, and the second refrigerant port 33, and then flow out to the outside of the accommodating chamber 11. The refrigerant may flow into the housing chamber 11 from the second refrigerant port 33, and then sequentially pass through the second refrigerant inlet 32, the first refrigerant inlet 22, and the first refrigerant port 21, and then flow out to the outside of the housing chamber 11.

Referring to Fig. 9, the air outlet pipe 40 has a cylindrical shape, and the air outlet pipe 40 is made of, for example, a corrosion-resistant material such as copper. The air outlet pipe 40 extends from the top end 14 of the cylinder 10 into the receiving cavity 11. As such, gas at the top of the barrel 10 can enter the outlet tube 40 to flow out of the containment chamber 11. Preferably, the axial direction of the air outlet pipe 40 is parallel or coincident with the axial direction of the cylinder 10 such that the air outlet pipe 40 easily projects into the receiving cavity 11. The depth D1 at which the air outlet pipe 40 projects into the receiving cavity 11 is 1/3-1/2 of the depth D2 of the receiving cavity 11. This facilitates the entry of gas in the containment chamber 11 into the outlet pipe 40.

The air outlet pipe 40 is formed with an air outlet 41, and the air outlet 41 is located outside the receiving cavity 11. A plurality of sets of intake holes 43 are defined in the side wall 42 of the air outlet pipe 40. The plurality of sets of intake holes 43 are located in the receiving cavity 11, and the plurality of sets of intake holes 43 are spaced along the axial direction of the air outlet pipe 40, and each set of intake holes 43 is arranged. The air outlet 41 and the receiving cavity 11 are connected. In this way, the gas (gaseous refrigerant) in the receiving chamber 11 can quickly flow out of the receiving chamber 11 to reduce the air pressure of the receiving chamber 11, thereby improving the gas-liquid separation effect of the flasher 100.

Specifically, the plurality of sets of intake holes 43 can increase the area of the gas in the receiving chamber 11 into the air outlet tube 40, so that the flow rate of the gas entering the air outlet tube 40 can be increased, and the gas in the receiving chamber 11 flows out, and is accommodated. The air pressure in the chamber 11 is reduced, and the gas in the refrigerant liquid located in the housing chamber 11 is separated from the refrigerant liquid, thereby improving the gas-liquid separation effect of the flasher 100.

In order to facilitate the manufacture of the outlet pipe 40, preferably, the plurality of sets of intake holes 43 are evenly spaced along the axial direction of the outlet pipe 40. That is to say, the distance between any two adjacent sets of intake holes 43 is equal.

In some embodiments, the air inlet apertures 43 are circular, it being understood that in other embodiments, the air intake apertures 43 may be polygonal or fan shaped or square shaped.

In some embodiments, the number of each set of intake holes 43 is plural, and the plurality of intake holes 43 of the same set are distributed along the circumferential direction of the outlet pipe 40. Preferably, the plurality of intake holes 43 of the same group are evenly spaced along the circumferential direction of the air outlet duct 40. In this way, more air inlet holes 43 can be formed in the air outlet pipe 40 to increase the flow rate of the gas in the receiving cavity 11 into the air outlet pipe 40. It will be appreciated that in other embodiments, the number of intake holes 43 per set may be a single.

Referring to FIGS. 10 and 11 , in some embodiments, the air conditioning system 200 includes an air conditioning outdoor unit 102 that includes a housing 110 and a flasher 100 . The flasher 100 is disposed within the housing 110. The flasher 100 is fixed to the housing 110 by a first damper element 120.

In the air conditioner outdoor unit 102 of the embodiment of the present invention, the first damper element 120 can absorb the vibration of the flasher 100, thereby reducing the noise formed by the flasher 100 and improving the user experience.

Specifically, the housing 110 includes a chassis 112 and side plates 114. The side plate 114 is coupled to the chassis 112. The first damper element 120 is fixed to the chassis 112, and the flasher 100 is fixed to the first damper element 120. This facilitates the mounting of the first damper element 120 and the flasher 100. The first damper member 120 is fixed to the chassis 112, for example, by bonding, and is fixed to the chassis 112 by fasteners such as screws.

In certain embodiments, the first cushioning element 120 is a first rubber block 120. It can be understood that in other embodiments, the first damper element 120 can be an elastic element such as a spring.

In some embodiments, the first rubber block 120 has a rectangular parallelepiped. It can be understood that in other embodiments, the first rubber block 120 may have other shapes such as a truncated cone shape or a cylindrical shape.

Specifically, the first rubber block 120 is provided with a clamping groove 122 that clamps the flasher 100 to fix the flasher 100 on the first rubber block 120. As such, the clip slot 122 facilitates the disassembly of the flasher 100. It should be noted that clamping the flasher 100 by the clip slot 122 means that the flasher 100 does not move relative to the first rubber block 120 when the air conditioner outdoor unit 102 vibrates.

As shown in FIG. 12, in one example, the clip groove 122 clamps the first refrigerant tube 20. Thus, since the size of the first refrigerant pipe 20 is small, the pinch tank 122 is facilitated to clamp the first refrigerant pipe 20 to fix the flasher 100 to the first rubber block 120.

As shown in FIG. 13, in another example, when the second refrigerant pipe 30 projects from the bottom end 12 of the cylinder 10 into the cylinder 10, the number of the clamping grooves 122 is two, and the two clamping grooves 122 are respectively clamped. The first refrigerant pipe 20 and the second refrigerant pipe 30 are tight. This can further prevent the flasher 100 from moving relative to the first rubber block 120.

Specifically, each of the clamping slots 122 is formed with a first clamping opening 124 and a second clamping opening 126. The first refrigerant tube 20 and the second refrigerant tube 30 pass through the corresponding first clamping opening 124 and the second clamping opening 126 to The second refrigerant pipe 30 and the second refrigerant pipe 30 are partially located in the first rubber block 120 such that the clamping groove 122 can clamp the first refrigerant pipe 20 and the second refrigerant pipe 30.

Referring to FIGS. 10 and 14 , in some embodiments, the air conditioner outdoor unit 102 further includes a reversing valve 130 that is fixed to the housing 110 by the second damper member 140 .

As such, the second damper element 140 can absorb the vibration of the directional valve 130, thereby reducing the noise formed by the directional valve 130, improving the user experience.

Specifically, the reversing valve 130, such as the electromagnetic reversing valve 130, facilitates control of the operation of the diverter valve 130.

In certain embodiments, the housing 110 includes a partition 116 that spaces the space enclosed by the side panels 114. The second damper element 140 is fixed to the partition 116. The reversing valve 130 is fixed to the second damper member 140. As such, the partition 116 can provide a larger location for the second cushioning element 140 to be installed.

In certain embodiments, the second cushioning element 140 includes a second rubber block 140. It can be understood that in other embodiments, the second damper element 140 can be an elastic element such as a spring.

Specifically, please refer to FIG. 15 , the second rubber block 140 is provided with a mounting groove 141 , and the reversing valve 130 includes a valve body 131 , and the valve body 131 is at least partially received in the mounting groove 141 . As such, the mounting groove 141 allows the connection area of the reversing valve 130 and the second rubber block 140 to be large, which is advantageous for the installation of the reversing valve 130. In some embodiments, the valve body 131 is partially received in the mounting groove 141.

Preferably, the shape and size of the valve body 131 match the shape and size of the mounting groove 141. In some embodiments, the valve body 131 has a cylindrical shape, and the inner surface of the mounting groove 141 has a circular arc shape to match the outer shape of the valve body 131. It can be understood that the size of the mounting groove 141 is slightly larger than the size of the mounting groove 141, so that the valve body 131 can be installed in the mounting groove 141.

In some embodiments, the diverter valve 130 is secured to the second rubber block 140 by strapping the valve body 131 and the second rubber block 140. Thus, the manner in which the switching valve 130 is fixed is simple, and the switching valve 130 is easily detached from the second rubber block 140.

Specifically, the second rubber block 140 is provided with a groove 142 which is located in the radial direction of the valve body 131. The strap 150 passes through the groove 142 and bundles the valve body 131 in the circumferential direction of the valve body 131. As such, the slotted slot 142 can define movement of the strap 150 such that the diverter valve 130 is more stable on the second rubber block 140.

In some embodiments, the number of straps 150 is two, and the two straps 150 are spaced apart along the axial direction of the valve body 131.

In the description of the present specification, the description with reference to the terms "some embodiments", "one embodiment", "some embodiments", "example", "specific example", or "some examples", etc. Particular features, structures, materials or features described in the examples or examples are included in at least one embodiment or example of the invention. In the present specification, the schematic representation of the above terms is not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. In addition, various embodiments or examples described in the specification and features of various embodiments or examples may be combined and combined without departing from the scope of the invention.

Moreover, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, features defining "first" or "second" may include at least one of the features, either explicitly or implicitly. In the description of the present invention, "a plurality" means at least two, for example two, three, unless specifically defined otherwise.

Although the embodiments of the present invention have been shown and described, it is understood that the above-described embodiments are illustrative and are not to be construed as limiting the scope of the invention. The scope of the invention is defined by the claims and their equivalents.

Claims

An air conditioning system characterized by comprising:

a compressor having a first intake port, a second intake port, a supplemental port, a control port, and an exhaust port, the compressor including a first cylinder and a second cylinder, the first intake The port is connected to the first cylinder, and the second suction port is connected to the second cylinder. When the pressure of the control port is greater than the pressure of the second suction port, the compressor operates in the two-cylinder mode. When the pressure of the control port is less than or equal to the pressure of the second suction port, the compressor operates in a single cylinder mode;

a reversing assembly, the reversing assembly being in communication with the control port, the reversing assembly comprising a first valve port, a second valve port, a third valve port and a fourth valve port, the first valve port being selectable Optionally communicating the second valve port or the third valve port, the fourth valve port being capable of selectively communicating with the second valve port or the third valve port, the first valve port communicating The exhaust port, the fourth valve port is connected to the first air inlet and the second air inlet;

An outdoor heat exchanger and an indoor heat exchanger, wherein a first port of the outdoor heat exchanger communicates with the second valve port, and a second port of the outdoor heat exchanger communicates with the first port of the indoor heat exchanger a second port of the indoor heat exchanger communicates with the third valve port; and

a flasher, the flasher comprising two refrigerant ports and an air outlet, the two refrigerant ports respectively communicating with a second port of the outdoor heat exchanger and a first port of the indoor heat exchanger, the outlet The gas port is in communication with the gas supply port.
The air conditioning system of claim 1 wherein said control port is in communication with said second valve port.
The air conditioning system according to claim 1, wherein said control port is in communication with said third valve port.
The air conditioning system according to claim 1, wherein said air conditioning system further comprises a first throttle element and a second throttle element, said first throttle element being coupled to a second port of said outdoor heat exchanger And one of the refrigerant ports, the second throttle element connecting the first port of the indoor heat exchanger and the other of the refrigerant ports.
The air conditioning system according to claim 4, wherein said air conditioning system has an opening degree of said throttle element that is smaller than an opening degree of said second throttle element during cooling.
The air conditioning system according to claim 4, wherein the opening of the second throttle element is smaller than the opening of the first throttle element when the air conditioning system is heating.
The air conditioning system according to any one of claims 4-6, wherein the first throttle element and the second throttle element are both electronic expansion valves.
The air conditioning system according to any one of claims 4-6, wherein the first throttle element is an electronic expansion valve, and the second throttle element is a refrigeration spool, a heating spool, a capillary tube, and One of the thermal expansion valves; or

The second throttle element is an electronic expansion valve, and the first throttle element is one of a refrigeration valve core, a heating valve core, a capillary tube, and a thermal expansion valve.
The air conditioning system according to any one of claims 4 to 4, wherein the air conditioning system further comprises an electrically controlled heat exchanger, wherein the electrically controlled heat exchanger is configured to exchange heat of the electronic control components of the air conditioning system. An electrically controlled heat exchanger is coupled between the first throttle element and the flasher, or the electrically controlled heat exchanger is coupled between the second throttle element and the flasher.
The air conditioning system according to claim 1, wherein the air conditioning system comprises an air conditioner outdoor unit, the air conditioner outdoor unit includes a housing, the flasher is disposed in the housing, and the flasher passes the first A damping element is fixed to the housing.
An air conditioning system characterized by comprising:

a compressor capable of operating in a single cylinder mode or a two cylinder mode, the compressor being formed with a first intake port, a second intake port, a gas supply port, a control port, and an exhaust port, the compressor The first cylinder and the second cylinder are included, the first air inlet is connected to the first cylinder, and the second air inlet is connected to the second cylinder;

a reversing assembly including a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port being capable of selectively communicating with the second valve port or the a third valve port, the fourth valve port is capable of selectively communicating with the second valve port or the third valve port, the first valve port is connected to the exhaust port, and the fourth valve port is connected The first suction port and the second suction port, the control port can selectively communicate with the first valve port or the fourth valve port;

An outdoor heat exchanger and an indoor heat exchanger, wherein a first port of the outdoor heat exchanger communicates with the second valve port, and a second port of the outdoor heat exchanger communicates with the first port of the indoor heat exchanger The second port of the indoor heat exchanger is connected to the third valve port;

a flasher, the flasher comprising two refrigerant ports and an air outlet, the two refrigerant ports respectively communicating with a second port of the outdoor heat exchanger and a first port of the indoor heat exchanger, the outlet a gas port is connected to the gas supply port; and

a reversing valve, the reversing valve comprising a first port, a second port and a third port, wherein the first port communicates with the control port, the second port communicates with the first valve port, the third port a port communicating with the fourth valve port, the first port being capable of selectively communicating the second port or the third port, such that the control port can selectively communicate with the first valve port or a fourth valve port, when the control port is in communication with the fourth valve port, the compressor operates in the single cylinder mode, and when the control port is in communication with the first valve port, the compressor Working in the two-cylinder mode.
The air conditioning system according to claim 11, wherein the reversing valve is a solenoid valve for communicating the first port and the second port when the power is off, and is connected when energized The first port and the third port; or

The solenoid valve is configured to communicate the first port and the second port when energized, and communicate the one port and the third port when the power is off.
The air conditioning system according to claim 11, wherein the reversing valve is a pressure control valve, and the pressure control valve is configured to communicate the first port and the second port under a first pressure, The first port and the third port are connected under the action of the second pressure.
The air conditioning system according to claim 11, wherein the air conditioning system further comprises:

a detecting element for detecting a frequency of the compressor; and

a controller, configured to control the first port to communicate with the third port to operate the compressor in the single cylinder mode when the frequency is less than a preset first frequency threshold; The first port is controlled to communicate with the second port to operate the compressor in the two-cylinder mode when the frequency is greater than or equal to a preset second frequency threshold.
The air conditioning system of claim 14 wherein said first frequency threshold is less than or equal to said second frequency threshold.
The air conditioning system according to claim 11, wherein said air conditioning system further comprises a first throttle element and a second throttle element, said first throttle element being coupled to a second port of said outdoor heat exchanger And one of the refrigerant ports, the second throttle element connecting the first port of the indoor heat exchanger and the other of the refrigerant ports.
The air conditioning system according to claim 16, wherein said first throttle element and said second throttle element are both electronic expansion valves.
The air conditioning system according to claim 11, wherein the air conditioning system comprises an air conditioner outdoor unit, the air conditioner outdoor unit includes a housing, the flasher is disposed in the housing, and the flasher passes the first A damping element is fixed to the housing.
The air conditioning system according to claim 11, wherein the air conditioning system comprises an air conditioner outdoor unit, the air conditioner outdoor unit includes a housing, the reversing valve is disposed in the housing, and the reversing valve passes The second damper element is fixed to the housing.
A method for controlling an air conditioning system, characterized in that the air conditioning system comprises:

a compressor capable of operating in a single cylinder mode or a two cylinder mode, the compressor being formed with a first intake port, an exhaust port, a second intake port, a gas supply port, and a control port, the compressor The first cylinder and the second cylinder are included, the first air inlet is connected to the first cylinder, and the second air inlet is connected to the second cylinder;

a reversing assembly including a first valve port, a second valve port, a third valve port, and a fourth valve port, the first valve port being capable of selectively communicating with the second valve port or the a third valve port, the fourth valve port is capable of selectively communicating with the second valve port or the third valve port, the first valve port is connected to the exhaust port, and the fourth valve port is connected The first suction port and the second suction port, the control port can selectively communicate with the first valve port or the fourth valve port;

An outdoor heat exchanger and an indoor heat exchanger, wherein a first port of the outdoor heat exchanger communicates with the second valve port, and a second port of the outdoor heat exchanger communicates with the first port of the indoor heat exchanger The second port of the indoor heat exchanger is connected to the third valve port;

a flasher, the flasher comprising two refrigerant ports and an air outlet, the two refrigerant ports respectively communicating with a second port of the outdoor heat exchanger and a first port of the indoor heat exchanger, the outlet a gas port is connected to the gas supply port; and

a reversing valve, the reversing valve comprising a first port, a second port and a third port, wherein the first port communicates with the control port, the second port communicates with the first valve port, the third port a port communicating with the fourth valve port, the first port being capable of selectively communicating the second port or the third port, such that the control port can selectively communicate with the first valve port or a fourth valve port, when the control port is in communication with the fourth valve port, the compressor operates in the single cylinder mode, and when the control port is in communication with the first valve port, the compressor Working in the two-cylinder mode;

The control method includes:

Detecting a frequency of the compressor;

Controlling the first port to communicate with the third port to operate the compressor in the single cylinder mode when the frequency is less than a preset first frequency threshold; and

The first port is controlled to communicate with the second port to operate the compressor in the two-cylinder mode when the frequency is greater than or equal to a preset second frequency threshold.