Air conditioning system

Abstract

The utility model discloses an air-conditioning system, which comprises a compressor, a heat exchanger, a heat exchanger and a heat exchanger, an outdoor heat exchanger; an indoor heat exchanger; one end of the water tank heat exchanger is connected with one end of the indoor heat exchanger and one end of the outdoor heat exchanger; the control valve group comprises a first multi-way valve which is respectively connected with the outlet, the inlet, the outdoor heat exchanger and the indoor heat exchanger; the second multi-way valve is respectively connected with the outlet, the inlet and the water tank heat exchanger; the first multi-way valve controls the outlet to communicate with the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger to communicate with the inlet, or controls the outlet to communicate with the other end of the indoor heat exchanger and the other end of the outdoor heat exchanger to communicate with the inlet; and the second multi-way valve controls the other end of the water tank heat exchanger to selectively communicate with the outlet or the inlet. The air conditioning system can achieve simultaneous heating and water heating and simultaneous refrigeration and water heating, and has the advantages of being simple in connecting structure and convenient to switch modes.

Description

Technical Field

[0001] The utility model relates to the technical field of air conditioning, in particular to an air conditioning system. Background Art

[0002] The air-conditioning system in the related technology usually includes a compressor, an indoor heat exchanger, an outdoor heat exchanger, a water tank heat exchanger and a control valve group. The control valve group can control the flow direction of the refrigerant to control the indoor heat exchanger, the outdoor heat exchanger and the water tank heat exchanger to act as an evaporator or condenser, thereby realizing indoor cooling or heating through the indoor heat exchanger, and heating domestic water through the water tank heat exchanger.

[0003] Specifically, the control valve group is provided with a plurality of on-off valves, and the flow direction of the refrigerant can be controlled by the on-off coordination of the plurality of on-off valves.

[0004] However, in the related art, the control valve group of the air-conditioning system needs to be equipped with a large number of on-off valves to control the flow and disconnection of the refrigerant in different branches. The structure of the control valve group is complex, which makes it inconvenient to switch the mode of the air-conditioning system. Utility Model Content

[0005] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, one object of the present invention is to provide an air conditioning system that can achieve simultaneous heating and hot water production as well as simultaneous cooling and hot water production, and has the advantages of a simple connection structure and easy mode switching.

[0006] In order to achieve the above-mentioned purpose, according to an embodiment of the present invention, an air-conditioning system is proposed, comprising: a compressor having an inlet and an outlet; an outdoor heat exchanger for exchanging heat with outdoor air; an indoor heat exchanger for exchanging heat with indoor air, and one end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger; a water tank heat exchanger for exchanging heat with domestic water, and one end of the water tank heat exchanger is respectively connected to the one end of the indoor heat exchanger and the one end of the outdoor heat exchanger; a control valve group, the control valve group is respectively connected to the inlet, the outlet, the other end of the outdoor heat exchanger, the other end of the indoor heat exchanger and the other end of the water tank heat exchanger to control at least one of the outdoor heat exchanger, the indoor heat exchanger and the water tank heat exchanger to act as a cooling condenser, and at least another serves as an evaporator; the control valve group includes: a first multi-way valve, which is respectively connected to the outlet, the inlet, the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger; a second multi-way valve, which is respectively connected to the outlet, the inlet and the other end of the water tank heat exchanger; wherein, the first multi-way valve controls the outlet to be connected to the other end of the outdoor heat exchanger, and the other end of the indoor heat exchanger to be connected to the inlet, or controls the outlet to be connected to the other end of the indoor heat exchanger, and the other end of the outdoor heat exchanger to be connected to the inlet; and the second multi-way valve controls the other end of the water tank heat exchanger to be selectively connected to the outlet or the inlet.

[0007] The air-conditioning system according to the embodiment of the present invention can realize simultaneous heating and hot water production as well as simultaneous cooling and hot water production, and has the advantages of a simple connection structure and easy mode switching.

[0008] According to some embodiments of the present invention, the first multi-way valve includes: a first interface, the first interface is connected to the outlet; a second interface, the second interface is connected to the other end of the outdoor heat exchanger; a third interface, the third interface is connected to the inlet; and a fourth interface, the fourth interface is connected to the other end of the indoor heat exchanger; wherein, the first multi-way valve has a switchable first state and a second state, when the first multi-way valve is in the first state, the first interface is connected to the second interface and the third interface is connected to the fourth interface; when the first multi-way valve is in the second state, the first interface is connected to the fourth interface and the third interface is connected to the second interface.

[0009] According to some embodiments of the present invention, the second multi-way valve includes: a fifth interface, which is connected to the outlet; a sixth interface, which is connected to the inlet; and a seventh interface, which is connected to the other end of the water tank heat exchanger; wherein, the second multi-way valve has a switchable third state and a fourth state, and when the second multi-way valve is in the third state, the seventh interface is connected to the fifth interface; when the second multi-way valve is in the fourth state, the seventh interface is connected to the sixth interface.

[0010] According to some embodiments of the present invention, the control valve group also includes: a first on-off valve, which is connected between the second interface and the other end of the outdoor heat exchanger; and a second on-off valve, which is connected between the other end of the outdoor heat exchanger and the inlet.

[0011] According to some embodiments of the present invention, the air-conditioning system further includes: a first throttling element, one end of the first throttling element is connected to the one end of the outdoor heat exchanger, and the other end of the first throttling element is respectively connected to the one end of the indoor heat exchanger and the one end of the water tank heat exchanger; a second throttling element, one end of the second throttling element is connected to the one end of the water tank heat exchanger, and the other end of the second throttling element is respectively connected to the one end of the outdoor heat exchanger and the one end of the indoor heat exchanger; a third throttling element, one end of the third throttling element is connected to the one end of the indoor heat exchanger, and the other end of the third throttling element is respectively connected to the one end of the outdoor heat exchanger and the one end of the water tank heat exchanger.

[0012] According to some embodiments of the present utility model, the air-conditioning system has a cooling state, a heating state, a hot water state, a first cooling and hot water state, a heating and hot water state and a defrosting state; when the air-conditioning system is in the cooling state, the first multi-way valve is in the first state and the second multi-way valve is in the fourth state, the first on-off valve and the first throttling element are opened, the third throttling element is opened and throttled, and the second on-off valve and the second throttling element are closed; when the air-conditioning system is in the heating state, the first multi-way valve is in the second state and the second multi-way valve is in the fourth state, the first on-off valve and the third throttling element are opened, the first throttling element is opened and throttled, and the second on-off valve and the second throttling element are closed; when the air-conditioning system is in the heating state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second on-off valve and the second throttling element are opened, the first throttling element is opened and throttled, and the second on-off valve and the second throttling element are closed. The element is opened and throttled, and the first on-off valve and the third throttling element are closed; when the air-conditioning system is in the first cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second throttling element is opened, the third throttling element is opened and throttled, and the first on-off valve, the second on-off valve and the first throttling element are closed; when the air-conditioning system is in the heating and hot water state, the first multi-way valve is in the second state and the second multi-way valve is in the third state, the first on-off valve, the second throttling element and the third throttling element are opened, the first throttling element is opened and throttled, and the second on-off valve is closed; when the air-conditioning system is in the defrosting state, the first multi-way valve is in the first state and the second multi-way valve is in the fourth state, the first on-off valve and the first throttling element are opened, the second throttling element is opened and throttled, and the second on-off valve and the third throttling element are closed.

[0013] According to some embodiments of the present invention, the air-conditioning system further has a second cooling and hot water state and a third cooling and hot water state; when the air-conditioning system is in the second cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second on-off valve and the second throttling element are opened, the first throttling element and the third throttling element are opened and throttled, and the first on-off valve is closed; when the air-conditioning system is in the third cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the first on-off valve, the first throttling element and the second throttling element are opened, the third throttling element is opened and throttled, and the second on-off valve is closed.

[0014] According to some embodiments of the present invention, the air-conditioning system also includes: an economizer, the compressor is also provided with an air supply port, the economizer has a first heat exchange channel and a second heat exchange channel for mutual heat exchange, one end of the first heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the first heat exchange channel is respectively connected to the one end of the indoor heat exchanger and the one end of the water tank heat exchanger, one end of the second heat exchange channel is connected to the one end of the first heat exchange channel, and the other end of the second heat exchange channel is connected to the air supply port; a fourth throttling element, one end of the fourth throttling element is connected to the one end of the first heat exchange channel, and the other end of the fourth throttling element is connected to the one end of the second heat exchange channel.

[0015] According to some embodiments of the present invention, the air-conditioning system further includes: a water tank module, the water tank module including a water tank, an internal heat exchanger and a water pump, the water tank being used to store domestic water and being provided with a water inlet and a water outlet, the internal heat exchanger being arranged in the water tank and being used for heat exchange with the domestic water in the water tank, the internal heat exchanger being connected to the water pump; wherein, the water tank heat exchanger has a fifth heat exchange channel and a sixth heat exchange channel for mutual heat exchange, one end of the fifth heat exchange channel being connected to the second multi-way valve, and the other end of the fifth heat exchange channel being respectively connected to the one end of the outdoor heat exchanger and the one end of the indoor heat exchanger, and the sixth heat exchange channel being connected in series with the internal heat exchanger and the water pump.

[0016] The air-conditioning system proposed according to an embodiment of the present invention includes: a compressor having an inlet and an outlet; an outdoor heat exchanger for exchanging heat with outdoor air; an indoor heat exchanger for exchanging heat with indoor air, and one end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger; a water tank heat exchanger for exchanging heat with domestic water, and one end of the water tank heat exchanger is respectively connected to the one end of the indoor heat exchanger and the one end of the outdoor heat exchanger; a control valve group, the control valve group is respectively connected to the inlet, the outlet, the other end of the outdoor heat exchanger, the other end of the indoor heat exchanger and the other end of the water tank heat exchanger to control at least one of the outdoor heat exchanger, the indoor heat exchanger and the water tank heat exchanger to act as a cooling condenser, and at least another one serves as an evaporator; the control valve group includes: a first multi-way valve, which is respectively connected to the outlet, the inlet, the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger; a second multi-way valve, which is respectively connected to the outlet, the inlet and the other end of the water tank heat exchanger; wherein, the first multi-way valve controls the refrigerant flowing out of the outlet to flow through the outdoor heat exchanger and the indoor heat exchanger in sequence, or controls the refrigerant flowing out of the outlet to flow through the indoor heat exchanger and the outdoor heat exchanger in sequence; and the second multi-way valve controls the refrigerant flowing out of the outlet to flow to the water tank heat exchanger, or controls the refrigerant flowing through the water tank heat exchanger to flow to the inlet.

[0017] The air-conditioning system according to the embodiment of the present invention can realize simultaneous heating and hot water production as well as simultaneous cooling and hot water production, and has the advantages of a simple connection structure and easy mode switching.

[0018] Additional aspects and advantages of the present invention will be given in part in the following description and will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0020] Figure 1 It is a schematic diagram of the air conditioning system according to the utility model;

[0021] Figure 2 This is a principle diagram of an air-conditioning system in a cooling state according to an embodiment of the present utility model;

[0022] Figure 3 This is a principle diagram of an air-conditioning system in a heating state according to an embodiment of the present utility model;

[0023] Figure 4This is a principle diagram of an air-conditioning system in a hot water production state according to an embodiment of the present utility model;

[0024] Figure 5 This is a principle diagram of an air-conditioning system in a first cooling and hot water production state according to an embodiment of the present utility model;

[0025] Figure 6 This is a principle diagram of an air-conditioning system according to an embodiment of the present utility model in a heating and hot water production state;

[0026] Figure 7 This is a principle diagram of an air conditioning system in a defrosting state according to an embodiment of the utility model;

[0027] Figure 8 This is a schematic diagram of the air-conditioning system in the second cooling and hot water mode according to an embodiment of the present utility model;

[0028] Figure 9 This is a principle diagram of the air-conditioning system in the third cooling and hot water production state according to an embodiment of the present utility model.

[0029] Reference numerals:

[0030] 1. Air conditioning system;

[0031] 100, compressor; 110, inlet; 120, outlet; 130, air supply port;

[0032] 200, outdoor heat exchanger; 300, indoor heat exchanger;

[0033] 400, water tank heat exchanger; 410, fifth heat exchange channel; 420, sixth heat exchange channel;

[0034] 510, first multi-way valve; 511, first interface; 512, second interface; 513, third interface; 514, fourth interface;

[0035] 520, second multi-way valve; 521, fifth interface; 522, sixth interface; 523, seventh interface;

[0036] 530, first on-off valve; 540, second on-off valve;

[0037] 610, first throttling element; 620, second throttling element; 630, third throttling element; 640, fourth throttling element;

[0038] 700, water tank module; 710, water tank; 711, water inlet; 712, water outlet; 720, water pump;

[0039] 800, economizer; 810, first heat exchange channel; 820, second heat exchange channel;

[0040] 910. Gas-liquid separator; 920. Liquid storage tank. DETAILED DESCRIPTION

[0041] The following describes embodiments of the present invention in detail. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended only to explain the present invention and are not to be construed as limiting the present invention.

[0042] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0043] In the description of the present invention, "first feature" and "second feature" may include one or more such features.

[0044] In the description of the present invention, “multiple” means two or more, and “several” means one or more.

[0045] An air conditioning system 1 according to an embodiment of the present invention will be described below with reference to the accompanying drawings.

[0046] like Figures 1-9 As shown, the air-conditioning system 1 according to an embodiment of the present invention may include a compressor 100, which has an inlet 110 and an outlet 120. The refrigerant can flow out from the outlet 120 of the compressor 100 to flow to other components of the air-conditioning system 1, and the refrigerant can also flow back from the inlet 110 into the compressor 100 to complete the refrigerant cycle of the air-conditioning system 1.

[0047] In addition, the air-conditioning system 1 may further include a gas-liquid separator 910, which may be connected in front of the inlet 110. In this way, the gas-liquid separator 910 may be used to separate the gaseous refrigerant, liquid refrigerant and refrigeration oil, thereby ensuring stable air intake of the compressor 100 and making the operation of the air-conditioning system 1 more reliable.

[0048] The air-conditioning system 1 may include an outdoor heat exchanger 200, which is used for heat exchange with outdoor air. The outdoor heat exchanger 200 may be a tube-fin heat exchanger, a plate heat exchanger or a shell-and-tube heat exchanger. In this way, the outdoor heat exchanger 200 can be used to absorb the heat of the outdoor air or release the heat of the refrigerant into the outdoor air.

[0049] The air conditioning system 1 may include an indoor heat exchanger 300, which is used to exchange heat with the indoor air. In this way, the indoor heat exchanger 300 can be used to absorb indoor heat to cool the room, or can be used to release heat to the room to heat the room. The indoor heat exchanger 300 may be a plate heat exchanger or a double-tube heat exchanger.

[0050] Specifically, one end of the indoor heat exchanger 300 is connected to one end of the outdoor heat exchanger 200, so that the refrigerant can flow from one end of the outdoor heat exchanger 200 to the indoor heat exchanger 300, or the refrigerant can also flow from one end of the indoor heat exchanger 300 to the outdoor heat exchanger 200, and then the mode of the air-conditioning system 1 can be switched so that the indoor heat exchanger 300 can act as a condenser or evaporator to cool or heat the indoor room.

[0051] The air-conditioning system 1 may include a water tank heat exchanger 400, which is used for heat exchange with domestic water. In this way, the air-conditioning system 1 can use the water tank heat exchanger 400 to heat domestic water to meet the user's hot water use needs. Alternatively, the air-conditioning system 1 can also use the water tank heat exchanger 400 to absorb the heat of domestic water. For example, the heat of domestic water can be used to defrost the outdoor heat exchanger 200.

[0052] Specifically, one end of the water tank heat exchanger 400 is respectively connected to one end of the indoor heat exchanger 300 and one end of the outdoor heat exchanger 200. In this way, the refrigerant flowing out from one end of the water tank heat exchanger 400 can flow to the outdoor heat exchanger 200 or the indoor heat exchanger 300, and then the water tank heat exchanger 400 can be used to heat domestic water and absorb the heat of the outdoor air through the outdoor heat exchanger 200 or absorb the heat of the indoor air through the indoor heat exchanger 300. Alternatively, the refrigerant flowing out from the outdoor heat exchanger 200 or the indoor heat exchanger 300 can also flow to the water tank heat exchanger 400.

[0053] The air conditioning system 1 may include a control valve group, which is respectively connected to the inlet 110, the outlet 120, the other end of the outdoor heat exchanger 200, the other end of the indoor heat exchanger 300 and the other end of the water tank heat exchanger 400 to control at least one of the outdoor heat exchanger 200, the indoor heat exchanger 300 and the water tank heat exchanger 400 to act as a condenser and at least another one to act as an evaporator.

[0054] For example, the control valve group can control the flow direction of the refrigerant so that the outdoor heat exchanger 200 acts as a condenser and the indoor heat exchanger 300 acts as an evaporator, thereby cooling the indoor room; or, the indoor heat exchanger 300 can act as a condenser and the outdoor heat exchanger 200 can act as an evaporator, thereby heating the indoor room; or, the water tank heat exchanger 400 can act as a condenser and the indoor heat exchanger 300 can act as an evaporator, thereby cooling the indoor room while heating domestic water; or, the water tank heat exchanger 400 and the indoor heat exchanger 300 can act as a condenser at the same time and the outdoor heat exchanger 200 can act as an evaporator, thereby heating domestic water while heating the indoor room.

[0055] Specifically, the control valve group may include a first multi-way valve 510, which is respectively connected to the outlet 120, the inlet 110, the other end of the outdoor heat exchanger 200 and the other end of the indoor heat exchanger 300. In this way, the refrigerant can flow from the outlet 120 of the compressor 100 to the first multi-way valve 510, and flow to the outdoor heat exchanger 200 or the indoor heat exchanger 300 through the first multi-way valve 510, so that the first multi-way valve 510 can be used to control whether the refrigerant flows through the outdoor heat exchanger 200 and the indoor heat exchanger 300, and control the order in which the refrigerant flows through the outdoor heat exchanger 200 and the indoor heat exchanger 300, thereby controlling the outdoor heat exchanger 200 and the indoor heat exchanger 300 to act as a condenser or an evaporator.

[0056] In addition, the control valve group can also include a second multi-way valve 520, which is respectively connected to the outlet 120, the inlet 110 and the other end of the water tank heat exchanger 400. In this way, the refrigerant can flow out from the outlet 120 of the compressor 100 and flow to the second multi-way valve 520, and then flow to the water tank heat exchanger 400 through the second multi-way valve 520, so that the refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water; or, the refrigerant can also flow from the water tank heat exchanger 400 to the second multi-way valve 520, and flow back into the compressor 100 through the second multi-way valve 520.

[0057] Among them, the first multi-way valve 510 can control the outlet 120 to be connected to the other end of the outdoor heat exchanger 200, and the other end of the indoor heat exchanger 300 to be connected to the inlet 110. In this way, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the outdoor heat exchanger 200 through the first multi-way valve 510. At this time, the outdoor heat exchanger 200 can act as a condenser, that is, the refrigerant can first release heat to the outside through the outdoor heat exchanger 200, and at this time, the indoor heat exchanger 300 can act as an evaporator, and the refrigerant can absorb indoor heat through the indoor heat exchanger 300 and then flow back to the compressor through the first multi-way valve 510.

[0058] Alternatively, the first multi-way valve 510 can control the outlet 120 to be connected to the other end of the indoor heat exchanger 300, and the other end of the outdoor heat exchanger 200 to be connected to the inlet 110. In this way, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the indoor heat exchanger 300 through the first multi-way valve 510. At this time, the indoor heat exchanger 300 can act as a condenser, that is, the refrigerant can first release heat to the indoor room through the indoor heat exchanger 300, and at this time, the outdoor heat exchanger 200 can act as an evaporator, and the refrigerant can absorb the heat of the outdoor air through the outdoor heat exchanger 200 and then flow back to the compressor through the first multi-way valve 510.

[0059] In addition, the second multi-way valve 520 can control the other end of the water tank heat exchanger 400 to selectively communicate with the outlet 120 or the inlet 110. For example, the second multi-way valve 520 can control the other end of the water tank heat exchanger 400 to communicate with the outlet 120, so that the refrigerant flowing out of the compressor 100 can flow to the water tank heat exchanger 400 through the second multi-way valve 520, and then heat the domestic water through the water tank heat exchanger 400; alternatively, the second multi-way valve 520 can control the other end of the water tank heat exchanger 400 to communicate with the inlet 110, so that the refrigerant can absorb the heat of the domestic water through the water tank heat exchanger 400 and then flow back to the compressor. In this case, the heat of the domestic water can be used to defrost the outdoor heat exchanger 200.

[0060] Therefore, the air-conditioning system 1 in the embodiment of the present invention can not only realize indoor cooling or heating separately, and heat domestic water while cooling the indoor room, or heat domestic water while heating the indoor room, which provides a better user experience. Moreover, the structural setting of the control valve group is simpler, which is conducive to simplifying the piping layout structure of the air-conditioning system 1. The structure of the air-conditioning system 1 is simpler, thereby facilitating mode switching of the air-conditioning system 1.

[0061] In this way, the air conditioning system 1 according to the embodiment of the present invention can achieve simultaneous heating and hot water production as well as simultaneous cooling and hot water production, and has the advantages of a simple connection structure and easy mode switching.

[0062] In some specific embodiments of the present invention, Figure 1 As shown, the first multi-way valve 510 may include a first interface 511 connected to the outlet 120 , so that the refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the first multi-way valve 510 through the first interface 511 .

[0063] The first multi-way valve 510 may include a second interface 512, which is connected to the other end of the outdoor heat exchanger 200. In this way, the refrigerant flowing through the first multi-way valve 510 can flow to the outdoor heat exchanger 200 through the second interface 512, or the refrigerant can also flow from the other end of the outdoor heat exchanger 200 to the second interface 512 and flow back to the compressor 100 through the first multi-way valve 510.

[0064] The first multi-way valve 510 may include a third interface 513, which is connected to the inlet 110. In this way, the refrigerant flowing through the first multi-way valve 510 can flow to the inlet 110 through the third interface 513, and then flow back to the compressor 100, thereby realizing the refrigerant circulation of the air-conditioning system 1.

[0065] The first multi-way valve 510 may include a fourth interface 514, which is connected to the other end of the indoor heat exchanger 300. In this way, the refrigerant flowing through the first multi-way valve 510 can flow to the indoor heat exchanger 300 through the fourth interface 514, or the refrigerant can also flow from the other end of the indoor heat exchanger 300 to the fourth interface 514 and flow back to the compressor 100 through the first multi-way valve 510.

[0066] The first multi-way valve 510 has a switchable first state and a second state, such as Figure 2 As shown, when the first multi-way valve 510 is in the first state, the first port 511 is in communication with the second port 512 , and the third port 513 is in communication with the fourth port 514 .

[0067] Thus, the refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the outdoor heat exchanger 200 through the first interface 511 and the second interface 512 in sequence. At this time, the outdoor heat exchanger 200 can act as an evaporator, and the refrigerant can release heat to the outdoor air through the outdoor heat exchanger 200. In addition, the refrigerant flowing out from the indoor heat exchanger 300 can flow back to the compressor through the fourth interface 514 and the third interface 513 in sequence. At this time, the indoor heat exchanger 300 can act as an evaporator, and the refrigerant can absorb indoor heat through the indoor heat exchanger 300 to achieve indoor cooling.

[0068] In addition, if Figure 3 As shown, when the first multi-way valve 510 is in the second state, the first port 511 is in communication with the fourth port 514 and the third port 513 is in communication with the second port 512 .

[0069] Therefore, the refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the indoor heat exchanger 300 through the first interface 511 and the fourth interface 514 in sequence. At this time, the indoor heat exchanger 300 can act as an evaporator, and the refrigerant can release heat to the indoor room through the indoor heat exchanger 300 to achieve indoor heating, and the refrigerant flowing out from the outdoor heat exchanger 200 can flow back to the compressor through the second interface 512 and the third interface 513 in sequence. At this time, the outdoor heat exchanger 200 can act as an evaporator, and the refrigerant can absorb the heat of the outdoor air through the outdoor heat exchanger 200 and then flow back to the compressor 100.

[0070] In some specific embodiments of the present invention, Figure 1 As shown, the second multi-way valve 520 may include a fifth interface 521 , which is connected to the outlet 120 , so that the refrigerant flowing out of the outlet 120 can flow to the second multi-way valve 520 through the fifth interface 521 .

[0071] like Figure 1 As shown, the second multi-way valve 520 may include a sixth interface 522, which is connected to the inlet 110. In this way, the refrigerant flowing through the second multi-way valve 520 can flow to the inlet 110 through the sixth interface 522, and then flow back to the compressor 100, realizing the circulation of the refrigerant.

[0072] like Figure 1 As shown, the second multi-way valve 520 may include a seventh interface 523, which is connected to the other end of the water tank heat exchanger 400. In this way, the refrigerant flowing through the second multi-way valve 520 can flow to the water tank heat exchanger 400 through the seventh interface 523, and then heat domestic water through the water tank heat exchanger 400; or, the refrigerant flowing through the water tank heat exchanger 400 can also flow to the second multi-way valve 520 through the seventh interface 523, and then flow back to the compressor 100 through the second multi-way valve 520.

[0073] The second multi-way valve 520 has a switchable third state and a fourth state, such as Figure 4 As shown, when the second multi-way valve 520 is in the third state, the seventh interface 523 is connected to the fifth interface 521, so that the high-temperature refrigerant flowing out from the outlet 120 of the compressor 100 can flow through the fifth interface 521 and the seventh interface 523 in sequence and flow to the water tank heat exchanger 400. At this time, the high-temperature refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water, and then the refrigerant flowing out of the water tank heat exchanger 400 can flow to the outdoor heat exchanger 200 or the indoor heat exchanger 300, and then flow back to the compressor 100 after absorbing heat through the outdoor heat exchanger 200 or the indoor heat exchanger 300, and the air-conditioning system 1 completes the hot water cycle.

[0074] In addition, if Figure 7As shown, when the second multi-way valve 520 is in the fourth state, the seventh interface 523 is connected to the sixth interface 522. In this way, the refrigerant flowing through the water tank heat exchanger 400 can also flow to the second multi-way valve 520 through the seventh interface 523, and then flow back to the compressor 100 through the second multi-way valve 520. At this time, the air-conditioning system 1 can absorb the heat of domestic water through the water tank heat exchanger 400 to defrost the outdoor heat exchanger 200 through the heat of domestic water.

[0075] In some specific embodiments of the present invention, Figure 1 As shown, the control valve group may further include a first on-off valve 530, which is connected between the second interface 512 and the other end of the outdoor heat exchanger 200. In this way, the first on-off valve 530 can control the on-off between the second interface 512 and the other end of the outdoor heat exchanger 200. For example, when the outdoor heat exchanger 200 needs to act as an evaporator or a condenser, the first on-off valve 530 can be opened. At this time, the refrigerant flowing through the first multi-way valve 510 can flow to the outdoor heat exchanger 200 through the first on-off valve 530, or the refrigerant flowing out of the outdoor heat exchanger 200 can also flow to the first multi-way valve 510 through the first on-off valve 530, and then can flow back into the compressor 100.

[0076] like Figure 1 As shown, the control valve group may further include a second on-off valve 540, which is connected between the other end of the outdoor heat exchanger 200 and the inlet 110. In this way, the on-off between the other end of the outdoor heat exchanger 200 and the inlet 110 can be controlled by the second on-off valve 540. That is to say, the refrigerant flowing through the outdoor heat exchanger 200 can also flow directly back to the compressor through the second on-off valve 540. For example, when the first multi-way valve 510 is in the first state, the inlet 110 and the first on-off valve 530 are not connected. At this time, the second on-off valve 540 can be opened to ensure that the refrigerant can flow back to the compressor 100 normally, realize the circulation of the refrigerant, and ensure that the air-conditioning system 1 can operate normally, and the structural setting is more reasonable.

[0077] In some specific embodiments of the present invention, Figure 1 As shown, the air-conditioning system 1 may further include a first throttling element 610, one end of the first throttling element 610 being connected to one end of the outdoor heat exchanger 200, and the other end of the first throttling element 610 being connected to one end of the indoor heat exchanger 300 and one end of the water tank heat exchanger 400, respectively.

[0078] With this arrangement, the refrigerant flowing through the indoor heat exchanger 300 or the refrigerant flowing through the water tank heat exchanger 400 can be throttled and cooled by the first throttling element 610 before flowing to the outdoor heat exchanger 200. That is, when the indoor heat exchanger 300 or the water tank heat exchanger 400 acts as a condenser and the outdoor heat exchanger 200 acts as an evaporator, the refrigerant flowing to the outdoor heat exchanger 200 can be throttled and cooled by the first throttling element 610 before flowing into the outdoor heat exchanger 200, and absorb the heat of the outdoor air through the outdoor heat exchanger 200, which is beneficial to improving the efficiency of the refrigerant absorbing heat through the outdoor heat exchanger 200.

[0079] In addition, if Figure 1 As shown, the air-conditioning system 1 may further include a second throttling element 620, one end of the second throttling element 620 being connected to one end of the water tank heat exchanger 400, and the other end of the second throttling element 620 being connected to one end of the outdoor heat exchanger 200 and one end of the indoor heat exchanger 300 respectively.

[0080] With this arrangement, the refrigerant flowing out of the outdoor heat exchanger 200 or the refrigerant flowing out of the indoor heat exchanger 300 can be throttled and cooled by the second throttling element 620 before flowing to the water tank heat exchanger 400. That is, when the indoor heat exchanger 300 or the outdoor heat exchanger 200 acts as a condenser and the water tank heat exchanger 400 acts as an evaporator, the refrigerant flowing to the water tank heat exchanger 400 can be throttled and cooled by the second throttling element 620 before flowing into the water tank heat exchanger 400, and absorb the heat of domestic water through the water tank heat exchanger 400, which is beneficial to improving the efficiency of the refrigerant absorbing heat through the water tank heat exchanger 400.

[0081] In addition, if Figure 1 As shown, the air-conditioning system 1 may further include a third throttling element 630, one end of the third throttling element 630 being connected to one end of the indoor heat exchanger 300, and the other end of the third throttling element 630 being connected to one end of the outdoor heat exchanger 200 and one end of the water tank heat exchanger 400, respectively.

[0082] With this arrangement, the refrigerant flowing out of the outdoor heat exchanger 200 or the refrigerant flowing out of the water tank heat exchanger 400 can be throttled and cooled by the third throttling element 630 before flowing to the indoor heat exchanger 300. That is, when the water tank heat exchanger 400 or the outdoor heat exchanger 200 acts as a condenser and the indoor heat exchanger 300 acts as an evaporator, the refrigerant flowing to the indoor heat exchanger 300 can be throttled and cooled by the third throttling element 630 before flowing into the indoor heat exchanger 300, and absorb the heat of the indoor air through the indoor heat exchanger 300, which is beneficial to improving the efficiency of the refrigerant absorbing heat through the indoor heat exchanger 300.

[0083] In some specific embodiments of the present invention, Figure 2As shown, the air-conditioning system 1 has a cooling state, and when the air-conditioning system 1 is in the cooling state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the fourth state, the first on-off valve 530 and the first throttling element 610 are open, the third throttling element 630 is open and throttling, and the second on-off valve 540 and the second throttling element 620 are closed.

[0084] Thus, the high-temperature refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the first on-off valve 530 through the first interface 511 and the second interface 512, and flow to the outdoor heat exchanger 200 through the first on-off valve 530. At this time, the high-temperature refrigerant can release heat to the outdoor air through the outdoor heat exchanger 200, and the refrigerant flowing out of the outdoor heat exchanger 200 can flow to the third throttling element 630 through the first throttling element 610. After the refrigerant is throttled and cooled by the third throttling element 630, it flows to the indoor heat exchanger 300 and absorbs the heat of the indoor air through the indoor heat exchanger 300, thereby lowering the indoor temperature to achieve indoor cooling. Next, the refrigerant flows out from the indoor heat exchanger 300 and flows to the inlet 110 through the fourth interface 514 and the third interface 513 in turn to flow back into the compressor 100, realizing the refrigeration cycle of the air-conditioning system 1.

[0085] like Figure 3 As shown, the air-conditioning system 1 can also have a heating state, and when the air-conditioning system 1 is in the heating state, the first multi-way valve 510 is in the second state and the second multi-way valve 520 is in the fourth state, the first on-off valve 530 and the third throttling element 630 are open, the first throttling element 610 is open and throttling, and the second on-off valve 540 and the second throttling element 620 are closed.

[0086] Thus, the high-temperature refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the indoor heat exchanger 300 through the first interface 511 and the fourth interface 514. At this time, the high-temperature refrigerant can release heat to the indoor room through the indoor heat exchanger 300 to heat the indoor air and realize indoor heating. Then, the refrigerant flowing out from the indoor heat exchanger 300 can flow to the first throttling element 610 through the third throttling element 630. After the refrigerant is throttled and cooled by the first throttling element 610, it flows to the outdoor heat exchanger 200 and absorbs the heat of the outdoor air through the outdoor heat exchanger 200. Next, the refrigerant flows out from the outdoor heat exchanger 200 and flows to the inlet 110 through the second interface 512 and the third interface 513 in turn to flow back into the compressor 100, realizing the heating cycle of the air-conditioning system 1.

[0087] In addition, it should be noted that when the air conditioning system 1 is in the heating state, the first on-off valve 530 may be closed and the second on-off valve 540 may be opened, or the first on-off valve 530 and the second on-off valve 540 may be opened at the same time.

[0088] like Figure 4 As shown, the air-conditioning system 1 can also have a hot water making state, and when the air-conditioning system 1 is in the hot water making state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the third state, the second on-off valve 540 and the second throttling element 620 are open, the first throttling element 610 is open and throttling, and the first on-off valve 530 and the third throttling element 630 are closed.

[0089] Therefore, the high-temperature refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the water tank heat exchanger 400 through the fifth interface 521 and the seventh interface 523. At this time, the high-temperature refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water. Then, the refrigerant flowing out of the water tank heat exchanger 400 can flow to the first throttling element 610 through the second throttling element 620. After the refrigerant is throttled and cooled by the first throttling element 610, it flows to the outdoor heat exchanger 200 and absorbs the heat of the outdoor air through the outdoor heat exchanger 200. Next, the refrigerant flows out from the outdoor heat exchanger 200 and flows to the inlet 110 through the second interface 512 and the third interface 513 in turn to flow back into the compressor 100, thereby realizing the hot water circulation of the air-conditioning system 1.

[0090] In addition, it should be noted that when the air-conditioning system 1 is in the hot water making state, the first multi-way valve 510 can also be in the second state, and the second multi-way valve 520 can be in the third state, the first on-off valve 530 and the second throttling element 620 are opened, the first throttling element 610 is opened and throttled, and the second on-off valve 540 and the third throttling element 630 are closed.

[0091] Alternatively, the first multi-way valve 510 can be placed in the second state, and the second multi-way valve 520 can be placed in the third state. The first on-off valve 530, the second on-off valve 540 and the second throttling element 620 can be opened. The first throttling element 610 can be opened and throttled, and the third throttling element 630 can be closed.

[0092] like Figure 5 As shown, the air-conditioning system 1 can also have a first cooling and hot water state, and when the air-conditioning system 1 is in the first cooling and hot water state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the third state, the second throttling element 620 is open, the third throttling element 630 is open and throttling, and the first on-off valve 530, the second on-off valve 540 and the first throttling element 610 are closed.

[0093] Therefore, the high-temperature refrigerant flowing out from the outlet 120 of the compressor 100 can flow to the water tank heat exchanger 400 through the fifth interface 521 and the seventh interface 523. At this time, the high-temperature refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water. Then the refrigerant flowing out of the water tank heat exchanger 400 can flow to the third throttling element 630 through the second throttling element 620. After the refrigerant is throttled and cooled by the third throttling element 630, it flows to the indoor heat exchanger 300 and absorbs the heat of the indoor air through the indoor heat exchanger 300 to lower the indoor temperature, thereby realizing indoor cooling. Next, the refrigerant flows out from the indoor heat exchanger 300 and flows to the inlet 110 through the fourth interface 514 and the third interface 513 in turn to flow back into the compressor 100, realizing the first cooling and hot water cycle of the air-conditioning system 1.

[0094] like Figure 6 As shown, the air-conditioning system 1 can also have a heating and hot water state, and when the air-conditioning system 1 is in the heating and hot water state, the first multi-way valve 510 is in the second state and the second multi-way valve 520 is in the third state, the first on-off valve 530, the second throttling element 620 and the third throttling element 630 are opened, the first throttling element 610 is opened and throttled, and the second on-off valve 540 is closed.

[0095] Thus, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can be divided into two parts. One part of the refrigerant flows to the water tank heat exchanger 400 through the fifth interface 521 and the seventh interface 523. At this time, the high-temperature refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water. Then, the refrigerant flowing out of the water tank heat exchanger 400 can flow to the first throttling element 610 through the second throttling element 620; the other part of the refrigerant can flow to the indoor heat exchanger 300 through the first interface 511 and the fourth interface 514. At this time, the high-temperature refrigerant can pass through the indoor heat exchanger 30 0 releases heat to the room to heat the indoor air, thereby achieving indoor heating. Then, the refrigerant flowing out of the indoor heat exchanger 300 can flow to the first throttling element 610 through the third throttling element 630. After the two parts of refrigerant merge, they are throttled and cooled by the first throttling element 610 and then flow to the outdoor heat exchanger 200, and absorb the heat of the outdoor air through the outdoor heat exchanger 200. Next, the refrigerant flows out of the outdoor heat exchanger 200 and flows to the inlet 110 through the second interface 512 and the third interface 513 in sequence, and then flows back into the compressor 100, thereby achieving the heating and hot water cycle of the air-conditioning system 1.

[0096] In addition, it should be noted that when the air conditioning system 1 is in the heating and water heating state, the first on-off valve 530 can be closed and the second on-off valve 540 can be opened, or the first on-off valve 530 and the second on-off valve 540 can be opened at the same time.

[0097] like Figure 7As shown, the air-conditioning system 1 can also have a defrost state, and when the air-conditioning system 1 is in the defrost state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the fourth state, the first on-off valve 530 and the first throttling element 610 are opened, the second throttling element 620 is opened and throttled, and the second on-off valve 540 and the third throttling element 630 are closed.

[0098] Therefore, when it is necessary to defrost the outdoor heat exchanger 200, the air conditioning system 1 can be switched to the defrost state. At this time, the refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the first on-off valve 530 through the first interface 511 and the second interface 512, and flow to the outdoor heat exchanger 200 through the first on-off valve 530. At this time, the high-temperature refrigerant can flow through the outdoor heat exchanger 200 and heat the outdoor heat exchanger 200 to achieve defrosting of the outdoor heat exchanger 200, and then the refrigerant flowing out of the outdoor heat exchanger 200 can be heated. The refrigerant can flow to the second throttling element 620 through the first throttling element 610. After being throttled and cooled by the second throttling element 620, it flows to the water tank heat exchanger 400 and absorbs the heat of domestic water through the water tank heat exchanger 400. The heat of domestic water can then be used to defrost the outdoor heat exchanger 200. Next, the refrigerant flows out of the water tank heat exchanger 400 and flows to the inlet 110 through the seventh interface 523 and the fifth interface 521 in turn, so as to flow back into the compressor 100, thereby realizing the defrost cycle of the air-conditioning system 1.

[0099] In some specific embodiments of the present invention, Figure 8 As shown, the air-conditioning system 1 also has a second cooling and hot water state, and when the air-conditioning system 1 is in the second cooling and hot water state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the third state, the second on-off valve 540 and the second throttling element 620 are open, the first throttling element 610 and the third throttling element 630 are open and throttling, and the first on-off valve 530 is closed.

[0100] Thus, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can flow to the water tank heat exchanger 400 through the fifth interface 521 and the seventh interface 523. At this time, the high-temperature refrigerant can release heat into the domestic water through the water tank heat exchanger 400 to heat the domestic water. Then, the refrigerant flowing out of the water tank heat exchanger 400 can be divided into two parts:

[0101] A portion of the refrigerant flows through the second throttling element 620 to the third throttling element 630. After being throttled and cooled by the third throttling element 630, the refrigerant flows to the indoor heat exchanger 300. The indoor heat exchanger 300 absorbs heat from the indoor air to reduce the indoor temperature, thereby achieving indoor cooling. The refrigerant then flows out of the indoor heat exchanger 300 and flows to the inlet 110 through the fourth port 514 and the third port 513 in sequence.

[0102] Another part of the refrigerant flows to the first throttling element 610 through the second throttling element 620. After being throttled and cooled by the first throttling element 610, the refrigerant flows to the outdoor heat exchanger 200 and absorbs heat from the outdoor air through the outdoor heat exchanger 200. Next, the refrigerant flows out of the outdoor heat exchanger 200 and flows to the inlet 110 through the second on-off valve 540 to flow back into the compressor 100, thereby realizing the second cooling and hot water cycle of the air-conditioning system 1.

[0103] It is understandable that, relative to the first cooling and hot water state, when the air conditioning system 1 is in the second cooling and hot water state, part of the refrigerant flowing out of the water tank heat exchanger 400 will flow to the outdoor heat exchanger 200, absorb outdoor heat through the outdoor heat exchanger 200, and then flow back to the compressor 100. Therefore, when the heating demand for domestic water is large or the indoor cooling demand is small, the air conditioning system 1 can be switched to the second cooling and hot water state. In this way, the heat released by the water tank heat exchanger 400 can be replenished by absorbing heat from the outdoor air through the outdoor heat exchanger 200, without increasing the cooling capacity of the indoor heat exchanger 300, and the user experience is better.

[0104] like Figure 9 As shown, the air-conditioning system 1 can also have a third cooling and hot water state, and when the air-conditioning system 1 is in the third cooling and hot water state, the first multi-way valve 510 is in the first state and the second multi-way valve 520 is in the third state, the first on-off valve 530, the first throttling element 610 and the second throttling element 620 are opened, the third throttling element 630 is opened and throttled, and the second on-off valve 540 is closed.

[0105] Therefore, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can be divided into two parts:

[0106] A portion of the refrigerant can flow to the water tank heat exchanger 400 through the fifth interface 521 and the seventh interface 523. At this time, the high-temperature refrigerant can release heat into the domestic water through the water tank heat exchanger 400 to heat the domestic water. Then, the refrigerant flowing out of the water tank heat exchanger 400 flows through the second throttling element 620 to the third throttling element 630.

[0107] Another part of the refrigerant can flow to the first on-off valve 530 through the first interface 511 and the second interface 512, and flow to the outdoor heat exchanger 200 through the third on-off valve. This part of the refrigerant can absorb the heat of the outdoor air through the outdoor heat exchanger 200, and then the refrigerant can flow to the third throttling element 630 through the first throttling element 610 after flowing out of the outdoor heat exchanger 200. After the two parts of the refrigerant are merged, they are throttled and cooled by the third throttling element 630 and then flow to the indoor heat exchanger 300, and absorb the heat of the indoor air through the indoor heat exchanger 300 to lower the indoor temperature, thereby realizing indoor cooling. Next, the refrigerant flows out of the indoor heat exchanger 300 and flows to the inlet 110 through the fourth interface 514 and the third interface 513 in turn to flow back into the compressor 100, realizing the third cooling and hot water cycle of the air-conditioning system 1.

[0108] It is understandable that, relative to the first cooling and hot water state, when the air conditioning system 1 is in the third cooling and hot water state, part of the refrigerant flowing out of the compressor 100 will flow to the outdoor heat exchanger 200, and absorb outdoor heat through the outdoor heat exchanger 200 before flowing to the indoor heat exchanger 300. Therefore, when the heating demand for domestic water is small, or the indoor cooling demand is large, the air conditioning system 1 can be switched to the third cooling and hot water state. In this way, more heat of the refrigerant is released to the outside through the outdoor heat exchanger 200, and then the low-temperature refrigerant can absorb more heat from the indoor air through the indoor heat exchanger 300, thereby increasing the cooling capacity of the indoor heat exchanger 300, meeting the indoor cooling demand, and providing a better user experience.

[0109] In some specific embodiments of the present invention, Figures 1-9 As shown, the air-conditioning system 1 may further include an economizer 800, and the compressor 100 is further provided with an air supply port 130. The economizer 800 has a first heat exchange channel 810 and a second heat exchange channel 820 for mutual heat exchange, one end of the first heat exchange channel 810 is connected to one end of the outdoor heat exchanger 200, and the other end of the first heat exchange channel 810 is respectively connected to one end of the indoor heat exchanger 300 and one end of the water tank heat exchanger 400, one end of the second heat exchange channel 820 is connected to one end of the first heat exchange channel 810, and the other end of the second heat exchange channel 820 is connected to the air supply port 130. The air-conditioning system 1 may further include a fourth throttling element 640, one end of the fourth throttling element 640 is connected to one end of the first heat exchange channel 810, and the other end of the fourth throttling element 640 is connected to one end of the second heat exchange channel 820.

[0110] In this way, when the outside temperature is low and the air-conditioning system 1 is heating the indoor room, the liquid refrigerant flowing out of the indoor heat exchanger 300 flows to the first heat exchange channel 810, and then the liquid refrigerant flowing out of the first heat exchange channel 810 can be divided into two parts. One part of the liquid refrigerant can flow to the outdoor heat exchanger 200 through the first throttling element 610 to absorb the heat of the outdoor air through the outdoor heat exchanger 200, and the other part of the liquid refrigerant can flow to the fourth throttling element 640. After throttling and cooling by the fourth throttling element 640, this part of the refrigerant flows into the second heat exchange channel 820. At this time, the refrigerant in the first heat exchange channel 810 can be used to exchange heat with the refrigerant in the second heat exchange channel 820 to reduce the temperature of the refrigerant in the first heat exchange channel 810, and then the refrigerant flowing out of the second heat exchange channel 820 can flow to the air supply port 130 and flow into the compressor 100 through the air supply port 130. With this arrangement, the refrigerant flowing back to the compressor 100 from the air supply port 130 can be used to supply air to the compressor 100 and increase enthalpy, thereby improving the working efficiency of the compressor 100.

[0111] Moreover, after the liquid refrigerant in the first heat exchange channel 810 exchanges heat with the refrigerant in the second heat exchange channel 820, the refrigerant temperature in the second channel will be further reduced, thereby improving the efficiency of the refrigerant absorbing outdoor air through the outdoor heat exchanger 200.

[0112] In some embodiments of the present invention, the air conditioning system 1 may further include a liquid storage tank 920. One end of the liquid storage tank 920 may be connected to the first heat exchange channel 810, and the other end of the liquid storage tank 920 may be connected to the second throttling element 620 and the third throttling element 630, respectively. By providing the liquid storage tank 920, the liquid storage tank 920 may be used to store liquid refrigerant, thereby ensuring an adequate supply of refrigerant within the air conditioning system 1 and ensuring more reliable operation of the air conditioning system 1.

[0113] In some specific embodiments of the present invention, Figures 1-9 As shown, the air conditioning system 1 further includes a water tank module 700 .

[0114] Specifically, the water tank module 700 may include a water tank 710, which is used to store domestic water and is provided with a water inlet 711 and a water outlet 712, so that domestic water can be replenished into the water tank 710 through the water inlet 711, and domestic water in the water tank 710 can be taken out through the water outlet 712.

[0115] The water tank module 700 may include an internal heat exchanger (not shown in the figure), which is disposed in the water tank 710 and is used for heat exchange with the domestic water in the water tank 710 .

[0116] The water tank module 700 can include a water pump 720, and the internal heat exchanger is connected to the water pump 720. In this way, the water pump can drive the flow of refrigerant in the water tank module 700, thereby increasing the speed of the refrigerant flowing through the internal heat exchanger, thereby improving the heat exchange efficiency of the refrigerant through the internal heat exchanger and the domestic water in the water tank 710.

[0117] The water tank heat exchanger 400 has a fifth heat exchange channel 410 and a sixth heat exchange channel 420 for mutually exchanging heat. One end of the fifth heat exchange channel 410 is connected to the second multi-way valve 520, and the other end of the fifth heat exchange channel 410 is connected to one end of the outdoor heat exchanger 200 and one end of the indoor heat exchanger 300, respectively. The sixth heat exchange channel 420 is connected in series with the internal heat exchanger and the water pump 720. This arrangement allows the refrigerant flowing through the fifth heat exchange channel 410 to exchange heat with the refrigerant flowing through the sixth heat exchange channel 420, thereby allowing the water tank heat exchanger 400 to release heat to the water tank module 700 or absorb heat from the water tank module 700.

[0118] In addition, a heat-insulating layer may be provided inside the water tank 710 to prevent the heat inside the water tank 710 from diffusing to the outside, and the water tank 710 may better insulate domestic water.

[0119] like Figures 1-9 As shown, the air-conditioning system 1 according to an embodiment of the present invention may include a compressor 100 having an inlet 110 and an outlet 120. The refrigerant can flow out of the outlet 120 of the compressor 100 to flow to other components of the air-conditioning system 1, and the refrigerant can also flow back into the compressor 100 from the inlet 110 to complete the circulation of the refrigerant.

[0120] In addition, the air-conditioning system 1 may further include a gas-liquid separator 910, which may be connected in front of the inlet 110. In this way, the gas-liquid separator 910 may be used to separate the gaseous refrigerant, liquid refrigerant and refrigeration oil, thereby ensuring stable air intake of the compressor 100 and making the operation of the air-conditioning system 1 more reliable.

[0121] The air-conditioning system 1 may include an outdoor heat exchanger 200, which is used for heat exchange with outdoor air. The outdoor heat exchanger 200 may be a tube-fin heat exchanger, a plate heat exchanger or a shell-and-tube heat exchanger. In this way, the outdoor heat exchanger 200 can be used to absorb the heat of the outdoor air or release the heat of the refrigerant into the outdoor air.

[0122] The air conditioning system 1 may include an indoor heat exchanger 300, which is used to exchange heat with the indoor air. In this way, the indoor heat exchanger 300 can be used to absorb indoor heat to cool the room, or can be used to release heat to the room to heat the room. The indoor heat exchanger 300 may be a plate heat exchanger or a double-tube heat exchanger.

[0123] Specifically, one end of the indoor heat exchanger 300 is connected to one end of the outdoor heat exchanger 200, so that the refrigerant can flow from one end of the outdoor heat exchanger 200 to the indoor heat exchanger 300, or the refrigerant can also flow from one end of the indoor heat exchanger 300 to the outdoor heat exchanger 200, and then the mode of the air-conditioning system 1 can be switched so that the indoor heat exchanger 300 can act as a condenser or evaporator to cool or heat the indoor room.

[0124] The air-conditioning system 1 may include a water tank heat exchanger 400, which is used for heat exchange with domestic water. In this way, the air-conditioning system 1 can use the water tank heat exchanger 400 to heat domestic water to meet the user's hot water use needs. Alternatively, the air-conditioning system 1 can also use the water tank heat exchanger 400 to absorb the heat of domestic water. For example, the heat of domestic water can be used to defrost the outdoor heat exchanger 200.

[0125] Specifically, one end of the water tank heat exchanger 400 is respectively connected to one end of the indoor heat exchanger 300 and one end of the outdoor heat exchanger 200. In this way, the refrigerant flowing out from one end of the water tank heat exchanger 400 can flow to the outdoor heat exchanger 200 or the indoor heat exchanger 300, and then the water tank heat exchanger 400 can be used to heat domestic water and absorb the heat of the outdoor air through the outdoor heat exchanger 200 or absorb the heat of the indoor air through the indoor heat exchanger 300. Alternatively, the refrigerant flowing out from the outdoor heat exchanger 200 or the indoor heat exchanger 300 can also flow to the water tank heat exchanger 400.

[0126] The air conditioning system 1 may include a control valve group, which is respectively connected to the inlet 110, the outlet 120, the other end of the outdoor heat exchanger 200, the other end of the indoor heat exchanger 300 and the other end of the water tank heat exchanger 400 to control at least one of the outdoor heat exchanger 200, the indoor heat exchanger 300 and the water tank heat exchanger 400 to act as a condenser and at least another one to act as an evaporator.

[0127] For example, the control valve group can control the flow direction of the refrigerant so that the outdoor heat exchanger 200 acts as a condenser and the indoor heat exchanger 300 acts as an evaporator, thereby cooling the indoor room; or, the indoor heat exchanger 300 can act as a condenser and the outdoor heat exchanger 200 can act as an evaporator, thereby heating the indoor room; or, the water tank heat exchanger 400 can act as a condenser and the indoor heat exchanger 300 can act as an evaporator, thereby cooling the indoor room while heating domestic water; or, the water tank heat exchanger 400 and the indoor heat exchanger 300 can act as a condenser at the same time and the outdoor heat exchanger 200 can act as an evaporator, thereby heating domestic water while heating the indoor room.

[0128] Specifically, the control valve group may include a first multi-way valve 510, which is respectively connected to the outlet 120, the inlet 110, the other end of the outdoor heat exchanger 200 and the other end of the indoor heat exchanger 300. In this way, the refrigerant can flow from the outlet 120 of the compressor 100 to the first multi-way valve 510, and flow to the outdoor heat exchanger 200 or the indoor heat exchanger 300 through the first multi-way valve 510, so that the first multi-way valve 510 can be used to control whether the refrigerant flows through the outdoor heat exchanger 200 and the indoor heat exchanger 300, and control the order in which the refrigerant flows through the outdoor heat exchanger 200 and the indoor heat exchanger 300, thereby controlling the outdoor heat exchanger 200 and the indoor heat exchanger 300 to act as a condenser or an evaporator.

[0129] In addition, the control valve group can also include a second multi-way valve 520, which is respectively connected to the outlet 120, the inlet 110 and the other end of the water tank heat exchanger 400. In this way, the refrigerant can flow out from the outlet 120 of the compressor 100 and flow to the second multi-way valve 520, and then flow to the water tank heat exchanger 400 through the second multi-way valve 520, so that the refrigerant can release heat to the domestic water through the water tank heat exchanger 400 to heat the domestic water; or, the refrigerant can also flow from the water tank heat exchanger 400 to the second multi-way valve 520, and flow back into the compressor 100 through the second multi-way valve 520.

[0130] Among them, the first multi-way valve 510 can control the refrigerant flowing out of the outlet 120 to flow through the outdoor heat exchanger 200 and the indoor heat exchanger 300 in turn. In this way, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can first flow to the outdoor heat exchanger 200 through the first multi-way valve 510. At this time, the outdoor heat exchanger 200 can act as a condenser, that is, the refrigerant can first release heat to the outside through the outdoor heat exchanger 200, and at this time, the indoor heat exchanger 300 can act as an evaporator, and the refrigerant can absorb indoor heat through the indoor heat exchanger 300 and then flow back to the compressor through the first multi-way valve 510.

[0131] Alternatively, the first multi-way valve 510 can control the refrigerant flowing out of the outlet 120 to flow through the indoor heat exchanger 300 and the outdoor heat exchanger 200 in sequence. In this way, the high-temperature refrigerant flowing out of the outlet 120 of the compressor 100 can first flow to the indoor heat exchanger 300 through the first multi-way valve 510. At this time, the indoor heat exchanger 300 can act as a condenser, that is, the refrigerant can first release heat to the indoor through the indoor heat exchanger 300, and at this time, the outdoor heat exchanger 200 can act as an evaporator, and the refrigerant can absorb the heat of the outdoor air through the outdoor heat exchanger 200 and then flow back to the compressor through the first multi-way valve 510.

[0132] In addition, the second multi-way valve 520 can control the refrigerant flowing out of the outlet 120 to flow to the water tank heat exchanger 400, so that the refrigerant flowing out of the compressor 100 can flow to the water tank heat exchanger 400 through the second multi-way valve 520, and then can heat domestic water through the water tank heat exchanger 400.

[0133] Alternatively, the second multi-way valve 520 can control the refrigerant flowing through the water tank heat exchanger 400 to flow to the inlet 110, so that the refrigerant can absorb the heat of domestic water through the water tank heat exchanger 400 and then flow back to the compressor. At this time, the heat of domestic water can be used to defrost the outdoor heat exchanger 200.

[0134] Therefore, the air-conditioning system 1 in the embodiment of the present invention can not only realize indoor cooling or heating separately, and heat domestic water while cooling the indoor room, or heat domestic water while heating the indoor room, which provides a better user experience. Moreover, the structural setting of the control valve group is simpler, which is conducive to simplifying the piping layout structure of the air-conditioning system 1. The structure of the air-conditioning system 1 is simpler, thereby facilitating mode switching of the air-conditioning system 1.

[0135] In this way, the air conditioning system 1 according to the embodiment of the present invention can achieve simultaneous heating and hot water production as well as simultaneous cooling and hot water production, and has the advantages of a simple connection structure and easy mode switching.

[0136] Other structures and operations of the air-conditioning system 1 according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0137] The air conditioning system 1 of the present invention performs a refrigeration cycle of the air conditioning system 1 by using a compressor 100, a condenser, an expansion valve, and an evaporator. The refrigeration cycle includes a series of processes involving compression, condensation, expansion, and evaporation, and supplies refrigerant to the conditioned and heat-exchanged air.

[0138] The compressor 100 compresses high-temperature, high-pressure refrigerant gas and discharges the compressed refrigerant gas. The discharged refrigerant gas flows into the condenser. The condenser condenses the compressed refrigerant into a liquid phase, releasing heat to the surrounding environment through the condensation process.

[0139] The expansion valve expands the high-temperature, high-pressure liquid refrigerant condensed in the condenser into a low-pressure liquid refrigerant. The evaporator evaporates the refrigerant expanded in the expansion valve and returns the low-temperature, low-pressure refrigerant gas to the compressor 100. The evaporator achieves a cooling effect by utilizing the latent heat of evaporation of the refrigerant to exchange heat with the material to be cooled. Throughout this cycle, the air conditioning system 1 can adjust the temperature and humidity of the indoor space through the indoor heat exchanger 300.

[0140] In this specification, reference to terms such as "specific embodiment" and "specific example" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example.

[0141] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and purpose of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. An air conditioning system comprising: a compressor having an inlet and an outlet; Outdoor heat exchanger, used for heat exchange with outdoor air; an indoor heat exchanger, configured to exchange heat with indoor air, wherein one end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger; a water tank heat exchanger, used for heat exchange with domestic water, and one end of the water tank heat exchanger is respectively connected to the one end of the indoor heat exchanger and the one end of the outdoor heat exchanger; a control valve group, the control valve group being respectively connected to the inlet, the outlet, the other end of the outdoor heat exchanger, the other end of the indoor heat exchanger, and the other end of the water tank heat exchanger to control at least one of the outdoor heat exchanger, the indoor heat exchanger, and the water tank heat exchanger to function as a condenser and at least another one of the outdoor heat exchanger, the indoor heat exchanger, and the water tank heat exchanger to function as an evaporator; It is characterized by: The control valve group includes: a first multi-way valve, the first multi-way valve being respectively connected to the outlet, the inlet, the other end of the outdoor heat exchanger, and the other end of the indoor heat exchanger; a second multi-way valve, the second multi-way valve being connected to the outlet, the inlet and the other end of the water tank heat exchanger respectively; wherein the first multi-way valve controls the outlet to communicate with the other end of the outdoor heat exchanger and the other end of the indoor heat exchanger to communicate with the inlet, or controls the outlet to communicate with the other end of the indoor heat exchanger and the other end of the outdoor heat exchanger to communicate with the inlet; and The second multi-way valve controls the other end of the water tank heat exchanger to selectively communicate with the outlet or the inlet.

2. The air conditioning system according to claim 1, characterized in that The first multi-way valve comprises: a first interface connected to the outlet; a second interface connected to the other end of the outdoor heat exchanger; a third interface, the third interface being connected to the inlet; a fourth interface connected to the other end of the indoor heat exchanger; The first multi-way valve has a switchable first state and a second state. When the first multi-way valve is in the first state, the first interface is connected to the second interface and the third interface is connected to the fourth interface. When the first multi-way valve is in the second state, the first port is communicated with the fourth port and the third port is communicated with the second port.

3. The air conditioning system according to claim 2, characterized in that The second multi-way valve comprises: a fifth interface connected to the outlet; a sixth interface connected to the inlet; a seventh interface connected to the other end of the water tank heat exchanger; The second multi-way valve has a switchable third state and a fourth state, and when the second multi-way valve is in the third state, the seventh port is connected to the fifth port; When the second multi-way valve is in the fourth state, the seventh port is communicated with the sixth port.

4. The air conditioning system according to claim 3, characterized in that The control valve group also includes: a first on-off valve connected between the second interface and the other end of the outdoor heat exchanger; A second on-off valve is connected between the other end of the outdoor heat exchanger and the inlet.

5. The air conditioning system according to claim 4, characterized in that Also includes: a first throttling element, one end of the first throttling element being connected to the one end of the outdoor heat exchanger, and the other end of the first throttling element being connected to the one end of the indoor heat exchanger and the one end of the water tank heat exchanger, respectively; a second throttling element, one end of the second throttling element being connected to the one end of the water tank heat exchanger, and the other end of the second throttling element being connected to the one end of the outdoor heat exchanger and the one end of the indoor heat exchanger, respectively; A third throttling element, one end of the third throttling element is connected to the one end of the indoor heat exchanger, and the other end of the third throttling element is respectively connected to the one end of the outdoor heat exchanger and the one end of the water tank heat exchanger.

6. The air conditioning system according to claim 5, characterized in that The air conditioning system has a cooling state, a heating state, a hot water state, a first cooling and hot water state, a heating and hot water state, and a defrosting state; When the air conditioning system is in a cooling state, the first multi-way valve is in the first state and the second multi-way valve is in the fourth state, the first on-off valve and the first throttling element are open, the third throttling element is open and throttling, and the second on-off valve and the second throttling element are closed; When the air conditioning system is in a heating state, the first multi-way valve is in the second state and the second multi-way valve is in the fourth state, the first on-off valve and the third throttling element are open, the first throttling element is open and throttling, and the second on-off valve and the second throttling element are closed; When the air conditioning system is in a hot water heating state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second on-off valve and the second throttling element are open, the first throttling element is open and throttling, and the first on-off valve and the third throttling element are closed; When the air-conditioning system is in the first cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second throttling element is open, the third throttling element is open and throttling, and the first on-off valve, the second on-off valve and the first throttling element are closed; When the air conditioning system is in the heating or hot water state, the first multi-way valve is in the second state and the second multi-way valve is in the third state, the first on-off valve, the second throttling element and the third throttling element are open, the first throttling element is open and throttling, and the second on-off valve is closed; When the air-conditioning system is in the defrost state, the first multi-way valve is in the first state and the second multi-way valve is in the fourth state, the first on-off valve and the first throttling element are open, the second throttling element is open and throttling, and the second on-off valve and the third throttling element are closed.

7. The air conditioning system according to claim 5, characterized in that The air conditioning system also has a second cooling and hot water state and a third cooling and hot water state; When the air conditioning system is in the second cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the second on-off valve and the second throttling element are open, the first throttling element and the third throttling element are open and throttling, and the first on-off valve is closed; When the air-conditioning system is in the third cooling and hot water state, the first multi-way valve is in the first state and the second multi-way valve is in the third state, the first on-off valve, the first throttling element and the second throttling element are opened, the third throttling element is opened and throttles, and the second on-off valve is closed.

8. The air conditioning system according to claim 1, characterized in that Also includes: An economizer, wherein the compressor is further provided with an air supply port, and the economizer has a first heat exchange channel and a second heat exchange channel for exchanging heat with each other, one end of the first heat exchange channel is connected to the one end of the outdoor heat exchanger, and the other end of the first heat exchange channel is respectively connected to the one end of the indoor heat exchanger and the one end of the water tank heat exchanger, one end of the second heat exchange channel is connected to the one end of the first heat exchange channel, and the other end of the second heat exchange channel is connected to the air supply port; A fourth throttling element, one end of the fourth throttling element is connected to the one end of the first heat exchange channel, and the other end of the fourth throttling element is connected to the one end of the second heat exchange channel.

9. The air conditioning system according to claim 1, characterized in that Also includes: A water tank module, comprising a water tank, an internal heat exchanger, and a water pump. The water tank is used to store domestic water and is provided with a water inlet and a water outlet. The internal heat exchanger is disposed in the water tank and is used to exchange heat with the domestic water in the water tank. The internal heat exchanger is connected to the water pump. Among them, the water tank heat exchanger has a fifth heat exchange channel and a sixth heat exchange channel for mutual heat exchange, one end of the fifth heat exchange channel is connected to the second multi-way valve, and the other end of the fifth heat exchange channel is respectively connected to the one end of the outdoor heat exchanger and the one end of the indoor heat exchanger, and the sixth heat exchange channel is connected in series with the internal heat exchanger and the water pump.

10. An air conditioning system comprising: a compressor having an inlet and an outlet; Outdoor heat exchanger, used for heat exchange with outdoor air; an indoor heat exchanger, configured to exchange heat with indoor air, wherein one end of the indoor heat exchanger is connected to one end of the outdoor heat exchanger; a water tank heat exchanger, used for heat exchange with domestic water, and one end of the water tank heat exchanger is respectively connected to the one end of the indoor heat exchanger and the one end of the outdoor heat exchanger; a control valve group, the control valve group being respectively connected to the inlet, the outlet, the other end of the outdoor heat exchanger, the other end of the indoor heat exchanger, and the other end of the water tank heat exchanger to control at least one of the outdoor heat exchanger, the indoor heat exchanger, and the water tank heat exchanger to function as a condenser and at least another one of the outdoor heat exchanger, the indoor heat exchanger, and the water tank heat exchanger to function as an evaporator; It is characterized in that The control valve group includes: a first multi-way valve, the first multi-way valve being respectively connected to the outlet, the inlet, the other end of the outdoor heat exchanger, and the other end of the indoor heat exchanger; a second multi-way valve, the second multi-way valve being connected to the outlet, the inlet and the other end of the water tank heat exchanger respectively; Wherein, the first multi-way valve controls the refrigerant flowing out of the outlet to flow through the outdoor heat exchanger and the indoor heat exchanger in sequence, or controls the refrigerant flowing out of the outlet to flow through the indoor heat exchanger and the outdoor heat exchanger in sequence; and The second multi-way valve controls the refrigerant flowing out of the outlet to flow toward the water tank heat exchanger, or controls the refrigerant flowing through the water tank heat exchanger to flow toward the inlet.

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