JP6441471B2 - Air conditioning system and air conditioner equipped with the same - Google Patents

Description

  The present invention relates to the technical field of refrigeration equipment, and more particularly to an air conditioning system and an air conditioner equipped with the same.

  In related technologies, rated refrigeration operation status, intermediate refrigeration operation status, rated heating operation status, intermediate heating operation status and low temperature heating operation status in North America APF standards, North America SEER operation status and HSPF operation status, European ERP operation The air conditioning system designed for the situation, Japanese APF operating conditions and ultra-low temperature heating operating conditions, etc. lacks the design to optimize the air conditioning system, so the first cylinder of the designed compressor The ratio between the exhaust volume and the exhaust volume of the second cylinder is not within the most preferable range, which adversely affects the overall performance of the air conditioner.

  The object of the present invention is to solve at least one technical problem in the prior art. For this reason, this invention provides the air conditioning system which has the advantage that use performance is excellent.

  The present invention further provides an air conditioner including the air conditioning system.

  An air conditioning system is provided as a first form according to an embodiment of the present invention. The air conditioning system has a first cylinder, a second cylinder, an exhaust port, and a gas return port, and the gas compressed by the first cylinder and the second cylinder is discharged from the exhaust port, When the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, the compressor in which V1 and V2 satisfy V2 / V1 ≦ 0.1, the first inlet, An outdoor heat exchanger having one outlet, a second inlet, a second outlet, and an indoor heat exchanger in which the first outlet communicates with the second inlet, a first valve port, A second valve port, a third valve port, and a fourth valve port, wherein the first valve port communicates with the exhaust port, the fourth valve port communicates with the gas return port, A direction switching assembly in which two valve ports communicate with the first inlet and the third valve port communicates with the second outlet And a first throttle component and a second throttle component connected in series between the indoor heat exchanger and the outdoor heat exchanger, a first opening, a second opening, and a gas outlet, When the air conditioning system performs a cooling operation, the first valve port communicates with the second valve port, the third valve port communicates with the fourth valve port, and the first opening is the first throttle. The second opening is communicated with a second throttle component, the gas outlet is communicated with the second cylinder via a medium pressure intake pipe, and the air conditioning system performs a heating operation. One valve port communicates with the third valve port, the second valve port communicates with the fourth valve port, the first opening communicates with the second cylinder via the intermediate pressure intake pipe, The second opening communicates with the first throttle component, and the gas outlet communicates with the second throttle component. It comprises a separator, one end of which communicates with the fourth valve port, and a reservoir vessel and the other end is communicated with the gas return port through the low-pressure intake pipe.

  The air conditioning system according to the embodiment of the present invention effectively improves the performance of the air conditioning system by reducing the ratio of the exhaust volume of the second cylinder and the exhaust volume of the first cylinder to 0.1 or less. Make the harmony machine more likely to reach the best state of energy consumption efficiency.

  In a modification of the present invention, when the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, the V1 and the V2 satisfy V2 // V1 ≦ 0.09. Also good.

  In a modification of the present invention, if the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, then V1 and V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.08. It may be satisfied.

  In a modification of the present invention, when the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, the V1 and the V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.07. It may be satisfied.

  In a modification of the present invention, when the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, the V1 and the V2 satisfy 0.07 <V2 / V1 ≦ 0.08. It may be satisfied.

  In a modification of the present invention, the direction switching assembly may be a four-way valve.

  In a modification of the present invention, the compressor may be a gas refrigerant injection compressor.

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

  In the air conditioner according to the embodiment of the present invention, by installing the air conditioning system, the ratio between the exhaust volume of the second cylinder and the exhaust volume of the first cylinder is 0.1 or less, and the performance of the air conditioner system Can be effectively improved, and the air conditioner can reach the most excellent state of energy consumption efficiency.

The above and / or additional features and advantages of the present invention will become apparent and easily understood by describing the embodiments in conjunction with the following drawings. inside that,
1 is a schematic configuration diagram of an air conditioning system according to an embodiment of the present invention. It is a schematic block diagram of the air conditioning system which concerns on embodiment of this invention, and an air conditioning system is a cooling state. It is a schematic block diagram of the air conditioning system which concerns on embodiment of this invention, and an air conditioning system is a heating state.

100 air conditioning system,
110 compressor,
111 exhaust port,
112 gas return port,
120 outdoor heat exchanger,
121 First entrance,
122 1st exit,
130 indoor heat exchanger,
131 Second entrance,
132 second exit,
140 direction switching assembly,
141 First valve port,
142 Second valve port,
143 Third valve port,
144 Fourth valve port,
150 1st aperture part 160 2nd aperture part,
170 gas-liquid separator,
171 first opening,
172 second opening,
173 gas outlet,
181 reservoir,
182 Medium pressure intake pipe 183 Low pressure intake pipe

  Hereinafter, embodiments of the present invention will be described in detail. Although an example of the above embodiment is shown in the drawings, the same or similar reference numeral always represents the same or similar part or a part having the same or similar function. The embodiments described below with reference to the drawings are exemplary and should only be used to interpret the present invention and should not be construed as limiting the present invention.

  In the description of the present invention, it is necessary to understand that “center”, “top”, “bottom”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, The orientation or positional relationship indicated by terms such as “top”, “bottom”, “inside”, “outside” is based on the orientation or positional relationship shown in the drawings, and is used to conveniently or simply describe the present invention. It is not intended to be a limitation on the present invention, as it is intended to imply that a designated device or part is in a particular orientation and is not intended to indicate or imply that it is constructed and operated in a particular orientation. It should be noted that the terms “first” and “second” are used only to describe the purpose, and indicate or imply relative importance, or imply the number of technical features indicated. It is not understood to be directed. Thus, features that are limited to “first” and “second” explicitly or imply that one or more features are included. In the description of the present invention, “a plurality” means two or more unless otherwise specified.

  In the description of the present invention, the meanings of the terms “attachment”, “connection to each other”, and “connection” should be broadly understood unless otherwise specified and limited. For example, a fixed connection, a detachable connection, or an integral connection is possible. Mechanical or electrical connection is also possible. It is possible to connect directly, connect indirectly through an intermediate medium, or communicate between the two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood by specific cases.

  Hereinafter, an air conditioning system 100 according to an embodiment of the present invention will be described with reference to FIGS. 1 to 3.

  As shown in FIGS. 1 to 3, an air conditioning system 100 according to an embodiment of the present invention includes a compressor 110, an indoor heat exchanger 130, an outdoor heat exchanger 120, a direction switching assembly 140, a first The throttle part 150, the second throttle part 160, the gas-liquid separator 170, and the liquid reservoir 181 are provided.

  Specifically, the compressor 110 includes a first cylinder (not shown), a second cylinder (not shown), an exhaust port 111, and a gas return port 112. The first cylinder and the second cylinder The gas compressed by the cylinder is discharged from the exhaust port 111, where the exhaust volume of the first cylinder is V1, and the exhaust volume of the second cylinder is V2, V1 and V2 are V2 / V1 ≦ 0.1. Can be met.

  As shown in FIG. 1, the outdoor heat exchanger 120 has a first inlet 121 and a first outlet 122, and the indoor heat exchanger 130 has a second inlet 131 and a second outlet 132. The first outlet 122 communicates with the second inlet 131. One end of the liquid reservoir 181 communicates with the fourth valve port 144, and the other end communicates with the gas return port 112 via the low pressure intake pipe 183. The direction switching assembly 140 includes a first valve port 141, a second valve port 142, a third valve port 143, and a fourth valve port 144, of which the first valve port 141 communicates with the exhaust port 111. The fourth valve port 144 can communicate with the gas return port 112, the second valve port 142 can communicate with the first inlet 121, and the third valve port 143 can communicate with the second outlet 132.

  The first throttle component 150 and the second throttle component 160 are connected in series between the indoor heat exchanger 130 and the outdoor heat exchanger 120. The gas-liquid separator 170 has a first opening 171, a second opening 172, and a gas outlet 173. The first opening 171 communicates with the first throttle part 150, and the second opening 172 is a second throttle part. The gas outlet 173 can be in communication with the second cylinder. The gas-liquid separator 170 separates the internal refrigerant into a gas refrigerant and a liquid refrigerant, and the gas refrigerant can flow out from the gas outlet 173 and the liquid refrigerant can flow out from the second opening 172. By verifying the test, by reducing the ratio of the exhaust volume of the second cylinder and the exhaust volume of the first cylinder to 0.1 or less, the performance of the air conditioning system 100 is effectively improved, and the air conditioner It can be made to reach the most excellent state of energy consumption efficiency.

  As shown in FIG. 2, when the air conditioning system 100 performs a cooling operation, the first valve port 141 is communicated with the second valve port 142, and the third valve port 143 is communicated with the fourth valve port 144. . The refrigerant in the liquid reservoir 181 is sucked into the first cylinder and the second cylinder by the compressor 110, and after the refrigerant is compressed by the first cylinder and the second cylinder, it is shown in FIG. The first valve port 141 is entered along the direction indicated by the arrow a1. Since the first valve port 141 is in communication with the second valve port 142 and the second valve port 142 is in communication with the first inlet 121, the refrigerant sequentially flows along the direction indicated by the arrow a2 in FIG. The outdoor heat exchanger 120 can be entered through the valve port 142 and the first inlet 121. After the heat exchange in the outdoor heat exchanger 120, the refrigerant enters the first throttle component 150 from the first outlet 122 along the direction indicated by the arrow a <b> 3 in FIG. 2, and the flow rate is throttled by the first throttle component 150. After that, it flows out from the first throttle component 150 along the direction indicated by the arrow a4 in FIG.

  The gas-liquid separator 170 can separate the internal refrigerant into a gas refrigerant and a liquid refrigerant. The gas refrigerant flows out of the gas outlet 173 and can enter the second cylinder via the intermediate pressure intake pipe 182 along the direction indicated by the arrow a41 in FIG. The liquid refrigerant flows out of the second opening 172, and can enter the second throttle component 160 along the direction indicated by the arrow a42 in FIG. After the flow rate of the refrigerant is throttled by the second throttle component 160, the refrigerant enters the indoor heat exchanger 130 from the second inlet 131 along the direction indicated by the arrow a5 in FIG. After the heat exchange in the indoor heat exchanger 130, the refrigerant flows out from the second outlet 132 of the indoor heat exchanger 130 along the direction indicated by the arrow a <b> 6 in FIG. 2 and flows into the third valve port 143. Since the third valve port 143 communicates with the fourth valve port 144 and the fourth valve port 144 communicates with the liquid reservoir 181, the refrigerant is indicated by an arrow a <b> 7 in FIG. 2 through the fourth valve port 144. It can flow into the reservoir 181 along the direction and return to the compressor 110 again via the air return 112.

  As shown in FIG. 3, when the air conditioning system 100 performs a heating operation, the first valve port 141 is communicated with the third valve port 143, and the second valve port 142 is communicated with the fourth valve port 144. . The refrigerant in the liquid reservoir 181 is sucked into the first cylinder and the second cylinder by the compressor 110, and after the refrigerant is compressed by the first cylinder and the second cylinder, the refrigerant passes through the exhaust port 111 in FIG. The first valve port 141 is entered along the direction indicated by the arrow b1. Since the first valve port 141 is in communication with the third valve port 143 and the third valve port 143 is in communication with the second outlet 132, the refrigerant sequentially flows along the direction indicated by the arrow b2 in FIG. The indoor heat exchanger 130 can be entered through the valve port 143 and the second outlet 132. After the heat exchange in the indoor heat exchanger 130, the refrigerant enters the second throttle part 160 from the second inlet 131 along the direction indicated by the arrow b <b> 3 in FIG. 3, and the flow rate is throttled by the second throttle part 160. After that, it flows out of the second throttle part 160 along the direction shown by the arrow b4 in FIG.

  The gas-liquid separator 170 can separate the internal refrigerant into a gas refrigerant and a liquid refrigerant. The gas refrigerant flows out of the first opening 171 and can enter the second cylinder through the intermediate pressure intake pipe 182 along the direction indicated by the arrow b41 in FIG. The liquid refrigerant flows out of the second opening 172 and can enter the first throttle component 150 along the direction indicated by the arrow b42 in FIG. After the flow rate of the refrigerant is throttled by the first throttle component 150, the refrigerant enters the outdoor heat exchanger 120 from the first outlet 122 along the direction indicated by the arrow b5 in FIG. After the heat exchange in the outdoor heat exchanger 120, the refrigerant flows out from the first inlet 121 of the outdoor heat exchanger 120 along the direction indicated by the arrow b6 in FIG. 3 and then flows into the second valve port 142. . Since the second valve port 142 communicates with the fourth valve port 144 and the fourth valve port 144 communicates with the reservoir 181, the refrigerant is indicated by an arrow b 7 in FIG. 3 through the fourth valve port 144. It can flow into the reservoir 181 along the direction, and return to the compressor 110 again via the gas return port 112.

  The air conditioning system 100 according to the embodiment of the present invention effectively improves the performance of the air conditioning system 100 by setting the ratio of the exhaust volume of the second cylinder and the exhaust volume of the first cylinder to 0.1 or less. Thus, the air conditioner can easily reach the most excellent state of energy consumption efficiency.

  As one embodiment of the present invention, if the exhaust volume of the first cylinder is V1 and the exhaust volume of the second cylinder is V2, V1 and V2 may satisfy V2 / V1 ≦ 0.09. Good. When the ratio of the exhaust volume V1 of the first cylinder and the exhaust volume V2 of the second cylinder is within the range of 0.09, the performance of the air conditioning system 100 is effectively improved and the energy consumption efficiency is verified. Can be easily reached. Furthermore, when V1 and V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.08, it is possible to effectively improve the performance of the air-conditioning system 100 and easily reach the most excellent state of energy consumption efficiency. it can.

  As one embodiment of the present invention, when V1 and V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.07, the performance of the air conditioning system 100 is effectively improved and the energy consumption efficiency is the best. Can be easily reached. As another embodiment of the present invention, when V1 and V2 satisfy 0.07 <V2 / V1 ≦ 0.08, the performance of the air conditioning system 100 is effectively improved and the energy consumption efficiency is the most excellent. Can easily reach the state.

  As a modification of the present invention, the compressor 110 may be a gas refrigerant injection compressor 110. Therefore, the performance of the compressor 110 can be improved and the use performance of the air conditioning system 100 can be satisfied. As another modification of the present invention, the direction switching assembly 140 may be a four-way valve. Therefore, the structure of the air conditioning system 100 can be simplified and production costs can be saved.

  Hereinafter, an air conditioning system 100 according to an embodiment of the present invention will be described in detail using specific examples with reference to FIGS. 1 to 3. It should be understood that the following description is merely illustrative and should not be understood as limiting the present invention.

  As shown in FIGS. 1 to 3, the compressor 110 is a gas refrigerant injection compressor 110, and includes a first cylinder, a second cylinder, an exhaust port 111, and a gas return port 112. The gas compressed by the cylinder and the second cylinder is discharged from the exhaust port 111. The outdoor heat exchanger 120 has a first inlet 121 and a first outlet 122, the indoor heat exchanger 130 has a second inlet 131 and a second outlet 132, and the first outlet 122 is the first outlet 122. Two inlets 131 communicate with each other. One end of the liquid reservoir 181 communicates with the fourth valve port 144, and the other end communicates with the gas return port 112 via the low pressure intake pipe 183.

  The direction switching assembly 140 is a four-way valve, and includes a first valve port 141, a second valve port 142, a third valve port 143, and a fourth valve port 144. The first valve port 141 is connected to the exhaust port 111, the fourth valve port 144 is connected to the gas return port 112, the second valve port 142 is connected to the first inlet 121, and the third valve port 143 is connected to the first valve port 143. Two outlets 132 communicate with each other.

  The outdoor heat exchanger 120, the first throttle component 150, the gas-liquid separator 170, the second throttle component 160, and the indoor heat exchanger 130 are sequentially connected. The gas-liquid separator 170 has a first opening 171, a second opening 172, and a gas outlet 173. The first opening 171 may be in communication with the first throttle component 150, the second opening 172 may be in communication with the second throttle component 160, and the gas outlet 173 may be in communication with the second cylinder.

  As shown in FIG. 2, when the air conditioning system 100 performs a cooling operation, the first valve port 141 is communicated with the second valve port 142, and the third valve port 143 is communicated with the fourth valve port 144. Become. The refrigerant in the liquid reservoir 181 is sucked into the first cylinder and the second cylinder by the compressor 110, and after the refrigerant is compressed by the first cylinder and the second cylinder, it is shown in FIG. The first valve port 141 is entered along the direction indicated by the arrow a1. Since the first valve port 141 communicates with the second valve port 142 and the second valve port communicates with the first inlet 121, the refrigerant sequentially flows along the direction indicated by the arrow a2 in FIG. The outdoor heat exchanger 120 can be entered through the mouth 142 and the first inlet 121. After the heat exchange in the outdoor heat exchanger 120, the refrigerant enters the first throttle component 150 from the first outlet 122 along the direction indicated by the arrow a <b> 3 in FIG. 2, and the flow rate is throttled by the first throttle component 150. After that, it flows out from the first throttle component 150 along the direction indicated by the arrow a4 in FIG.

  The gas-liquid separator 170 can separate the internal refrigerant into a gas refrigerant and a liquid refrigerant. The gas refrigerant flows out of the gas outlet 173 and can enter the second cylinder via the intermediate pressure intake pipe 182 along the direction indicated by the arrow a41 in FIG. The liquid refrigerant flows out of the second opening 172, and can enter the second throttle component 160 along the direction indicated by the arrow a42 in FIG. After the flow rate of the refrigerant is throttled by the second throttle component 160, the refrigerant enters the indoor heat exchanger 130 from the second inlet 131 along the direction indicated by the arrow a5 in FIG. After the heat exchange in the indoor heat exchanger 130, the refrigerant flows out from the second outlet 132 of the indoor heat exchanger 130 along the direction indicated by the arrow a <b> 6 in FIG. 2 and further flows into the third valve port 143. . Since the third valve port 143 communicates with the fourth valve port 144 and the fourth valve port 144 communicates with the liquid reservoir 181, the refrigerant is indicated by an arrow a <b> 7 in FIG. 2 through the fourth valve port 144. It can flow into the reservoir 181 along the direction, and return to the compressor 110 again via the gas return port 112.

  As shown in FIG. 3, when the air conditioning system 100 performs a heating operation, the first valve port 141 is communicated with the third valve port 143, and the second valve port 142 is communicated with the fourth valve port 144. Become. The refrigerant in the liquid reservoir 181 is sucked into the first cylinder and the second cylinder by the compressor 110, and after the refrigerant is compressed by the first cylinder and the second cylinder, the refrigerant passes through the exhaust port 111 in FIG. The first valve port 141 is entered along the direction indicated by the arrow b1. Since the first valve port 141 is in communication with the third valve port 143 and the third valve port 143 is in communication with the second outlet 132, the refrigerant sequentially flows along the direction indicated by the arrow b2 in FIG. The indoor heat exchanger 130 can be entered through the valve port 143 and the second outlet 132. After the heat exchange in the indoor heat exchanger 130, the refrigerant enters the second throttle part 160 from the second inlet 131 along the direction indicated by the arrow b <b> 3 in FIG. 3, and the flow rate is throttled by the second throttle part 160. After that, it flows out of the second throttle part 160 along the direction shown by the arrow b4 in FIG.

  The gas-liquid separator 170 can separate the internal refrigerant into a gas refrigerant and a liquid refrigerant. The gas refrigerant flows out of the first opening 171 and can enter the second cylinder through the intermediate pressure intake pipe 182 along the direction indicated by the arrow b41 in FIG. The liquid refrigerant flows out of the second opening 172 and can enter the first throttle component 150 along the direction indicated by the arrow b42 in FIG. After the flow rate of the refrigerant is throttled by the first throttle component 150, the refrigerant enters the outdoor heat exchanger 120 from the first outlet 122 along the direction indicated by the arrow b5 in FIG. After the heat exchange in the outdoor heat exchanger 120, the refrigerant flows out from the first inlet 121 of the outdoor heat exchanger 120 along the direction indicated by the arrow b6 in FIG. 3 and then flows into the second valve port 142. . Since the second valve port 142 communicates with the fourth valve port 144 and the fourth valve port 144 communicates with the reservoir 181, the refrigerant is indicated by an arrow b 7 in FIG. 3 through the fourth valve port 144. It can flow into the reservoir 181 along the direction, and return to the compressor 110 again via the gas return port 112.

  The following is a theoretical calculation of an air conditioning system that adopts APF Grade 3 and APF Grade 1 conditions in the APF standards in China. Of these, the condensation temperature is Tc, the evaporation temperature is Te, the condenser outlet temperature is Tco, and the intake air temperature is Ts. The following parameters can be referred to for the values of condensation temperature, evaporation temperature, condenser outlet temperature, and intake air temperature under APF grade 3 and APF grade 1 conditions in China.

  Taking the refrigerant R410A as an example, the calculation results of the air conditioning system 100 according to the embodiment of the present invention are as follows.

  According to the calculation result, when the ratio between the exhaust volume V2 of the second cylinder and the exhaust volume V1 of the first cylinder is 10% or less, the air conditioning system 100 is likely to reach the most excellent state.

  An air conditioner according to an embodiment of the present invention includes the air conditioning system 100.

  In the air conditioner according to the embodiment of the present invention, by providing the air conditioning system 100, the ratio between the exhaust volume V2 of the second cylinder and the exhaust volume V1 of the first cylinder is 0.1 or less. The performance of 100 can be effectively improved so that the air conditioner reaches the most excellent state of energy consumption efficiency.

  In the description of the present invention, terms such as “one of the embodiments”, “modified examples”, “exemplary embodiments”, “one example”, “specific examples”, or “other examples” are referred to. The description means that at least one embodiment or example of the present invention includes a specific feature, configuration, material, or feature described according to the embodiment or example. In this specification, exemplary explanations for the above terms do not necessarily indicate the same embodiments or examples. Also, the specific features, configurations, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, changes and variations may be made to these embodiments without departing from the principles and spirit of the invention. And the scope of the present invention is limited by the claims and their equivalents.

Claims (8)

An air conditioning system,
A first cylinder, a second cylinder provided in parallel with the first cylinder, an exhaust port, and a gas return port, and the gas compressed by the first cylinder and the second cylinder is the exhaust port A compressor satisfying 0 < V2 / V1 ≦ 0.1, where V1 is an exhaust volume of the first cylinder, and V2 is an exhaust volume of the second cylinder.
An outdoor heat exchanger having a first inlet and a first outlet;
An indoor heat exchanger having a second inlet and a second outlet, wherein the first outlet is in communication with the second inlet;
The first valve port has a first valve port, a second valve port, a third valve port, and a fourth valve port. The first valve port communicates with the exhaust port, and the fourth valve port is the gas return port. A direction switching assembly in which the second valve port is in communication with the first inlet and the third valve port is in communication with the second outlet;
A first throttle component and a second throttle component connected in series between the indoor heat exchanger and the outdoor heat exchanger;
When the air conditioning system performs a cooling operation, the first valve port communicates with the second valve port, and the third valve port includes the first opening, the second opening, and the gas outlet. The first valve opening communicates with the first throttle part, the second opening communicates with the second throttle part, and the gas outlet passes through the intermediate pressure intake pipe. When the air conditioning system communicates with a cylinder and performs a heating operation, the first valve port communicates with the third valve port, the second valve port communicates with the fourth valve port, and the first opening Is connected to the second cylinder via the intermediate pressure intake pipe, the second opening is connected to the first throttle component, and the gas outlet is connected to the second throttle component;
An air conditioning system comprising: a liquid reservoir having one end communicated with the fourth valve port and the other end communicated with the gas return port via a low-pressure intake pipe. The air conditioning system according to claim 1, wherein the V1 and the V2 satisfy 0 < V2 / V1 ≦ 0.09.   The air conditioning system according to claim 2, wherein the V1 and the V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.08.   The air conditioning system according to claim 3, wherein the V1 and the V2 satisfy 0.04 ≦ V2 / V1 ≦ 0.07.   The air conditioning system according to claim 3, wherein the V1 and the V2 satisfy 0.07 <V2 / V1 ≦ 0.08.   The air conditioning system according to any one of claims 1 to 5, wherein the direction switching assembly is a four-way valve.   The air conditioning system according to any one of claims 1 to 6, wherein the compressor is a gas refrigerant injection compressor. An air conditioner provided with the air conditioning system in any one of Claims 1-7.

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