Air conditioner

Abstract

The embodiment of the utility model provides an air conditioner. The air conditioner comprises a compressor; the first heat exchanger, the second heat exchanger and the third heat exchanger communicate with the compressor through refrigerant pipelines, the first heat exchanger is used for exchanging heat with outdoor air, and the second heat exchanger is used for exchanging heat with indoor air; the hydraulic module exchanges heat with the third heat exchanger, and the hydraulic module is provided with at least one indoor heat supply tail end; and the valve assembly is installed on the refrigerant pipeline, and the valve assembly is used for enabling the refrigerant to flow through the third heat exchanger in the heating mode so as to heat liquid flowing through the indoor heat supply tail end. According to the embodiment of the invention, the refrigerant can flow through the third heat exchanger through the valve assembly in the water heating mode so as to heat the liquid flowing through the indoor heat supply tail end, so that the indoor temperature distribution is reasonable, and the heat supply comfort in winter is improved.

Description

Technical Field

[0001] The present application relates to the technical field of air conditioners, and in particular to an air conditioner. Background Art

[0002] In the related art, the existing unit-type air source heat pump air conditioner products have duct units and cabinet units as the indoor units, which provide cooling and heating for the indoor space through refrigerant-air heat exchange in both summer and winter. However, in winter heating, duct units and cabinet units heat the indoor air, which will cause problems such as the indoor air being hot on the top and cold on the bottom, and the air being dry, making the user's comfort level poor. Utility Model Content

[0003] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an air conditioner, which aims to make the indoor temperature distribution reasonable during winter heating to improve the winter heating comfort.

[0004] In a first aspect, an embodiment of the present application provides an air conditioner, comprising:

[0005] compressor;

[0006] The first heat exchanger, the second heat exchanger and the third heat exchanger are all connected to the compressor through a refrigerant pipeline, the first heat exchanger is used to exchange heat with outdoor air, and the second heat exchanger is used to exchange heat with indoor air;

[0007] A hydraulic module, exchanging heat with the third heat exchanger, wherein the hydraulic module is provided with at least one indoor heating terminal;

[0008] A valve assembly is installed on the refrigerant pipeline, and the valve assembly is used to allow the refrigerant to flow through the third heat exchanger in the hot water making mode to heat the liquid flowing through the indoor heating end.

[0009] According to some embodiments of the present application, the valve assembly includes:

[0010] a flow path switching valve, connected to the compressor, the first heat exchanger, the second heat exchanger and the third heat exchanger respectively, and the flow path switching valve is used to switch the refrigerant flow direction of the air conditioner;

[0011] A flow regulating valve is installed on the refrigerant pipeline, and the flow regulating valve is used to adjust the refrigerant flow passing through the first heat exchanger, the second heat exchanger or the third heat exchanger.

[0012] According to some embodiments of the present application, the flow path switching valve includes:

[0013] a first multi-way valve, wherein a first port of the first multi-way valve is connected to an exhaust port of the compressor, a second port of the first multi-way valve is connected to the first heat exchanger, and a third port of the first multi-way valve is connected to an air return port of the compressor;

[0014] A second multi-way valve, the first port of the second multi-way valve is connected to the fourth port of the first multi-way valve, the second port of the second multi-way valve is connected to the third heat exchanger, the third port of the second multi-way valve is connected to the return air port of the compressor, and the fourth port of the second multi-way valve is connected to the second heat exchanger.

[0015] According to some embodiments of the present application, the flow regulating valve includes:

[0016] A first regulating valve, disposed on one side of the first heat exchanger, for regulating a flow rate of refrigerant flowing through the first heat exchanger;

[0017] A second regulating valve, disposed on one side of the second heat exchanger, for regulating a flow rate of the refrigerant flowing through the second heat exchanger;

[0018] The third regulating valve is arranged on one side of the third heat exchanger and is used to adjust the flow rate of the refrigerant flowing through the third heat exchanger.

[0019] According to some embodiments of the present application, in the air cooling mode, the refrigerant flowing out from the exhaust port of the compressor flows sequentially through the first port and the second port of the first multi-way valve, the first heat exchanger, the second heat exchanger, the fourth port and the third port of the second multi-way valve, and then flows into the return air port of the compressor.

[0020] According to some embodiments of the present application, in the air heating mode, the refrigerant flowing out from the exhaust port of the compressor flows sequentially through the first port and the fourth port of the first multi-way valve, the first port and the fourth port of the second multi-way valve, the second heat exchanger, the first heat exchanger, the second port and the third port of the first multi-way valve, and then flows into the return air port of the compressor.

[0021] According to some embodiments of the present application, in the hot water making mode, the refrigerant flowing out from the exhaust port of the compressor flows sequentially through the first port and the fourth port of the first multi-way valve, the first port and the second port of the second multi-way valve, the third heat exchanger, the first heat exchanger, the second port and the third port of the first multi-way valve, and then flows into the return air port of the compressor.

[0022] According to some embodiments of the present application, in the defrost mode, the refrigerant flowing out from the exhaust port of the compressor flows sequentially through the first port and the second port of the first multi-way valve, the first heat exchanger, the third heat exchanger, the second port and the third port of the second multi-way valve, and then flows into the return air port of the compressor.

[0023] According to some embodiments of the present application, the air conditioner also includes an economizer and a fourth regulating valve, one end of the main flow path of the economizer is connected to the first heat exchanger, and the other end is connected to the second heat exchanger and the third heat exchanger, one end of the auxiliary flow path of the economizer is connected between the first heat exchanger and the main flow path, and the other end is connected to the enthalpy increase port of the compressor, and the fourth regulating valve is arranged at one end of the auxiliary flow path for adjusting the refrigerant flow rate flowing through the auxiliary flow path.

[0024] According to some embodiments of the present application, the fourth regulating valve is used to allow the refrigerant to flow through the auxiliary flow path and then flow into the enthalpy increase port of the compressor in an air cooling mode, an air heating mode or a hot water heating mode; and the fourth regulating valve is also used to stop the refrigerant from flowing through the auxiliary flow path in a defrost mode.

[0025] According to the technical solution of the embodiment of the present application, at least the following beneficial effects are achieved: the embodiment of the present application proposes an air conditioner, comprising: a compressor; a first heat exchanger, a second heat exchanger and a third heat exchanger, all of which are connected to the compressor through a refrigerant pipeline, the first heat exchanger is used to exchange heat with outdoor air, and the second heat exchanger is used to exchange heat with indoor air; a hydraulic module, which exchanges heat with the third heat exchanger, and the hydraulic module is provided with at least one indoor heating terminal; a valve assembly, which is installed on the refrigerant pipeline, and the valve assembly is used to make the refrigerant flow through the third heat exchanger in the heating mode to heat the liquid flowing through the indoor heating terminal. Since the embodiment of the present application can make the refrigerant flow through the third heat exchanger through the valve assembly in the hot water mode to heat the liquid flowing through the indoor heating terminal, the indoor temperature distribution is reasonable to improve the heating comfort in winter.

[0026] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide further understanding of the technical solution of the present application and constitute a part of the specification. Together with the embodiments of the present application, they are used to explain the technical solution of the present application and do not constitute a limitation on the technical solution of the present application.

[0028] Figure 1 is a structural schematic diagram of an air conditioner provided by an embodiment of the present application;

[0029] Figure 2is a schematic diagram of the refrigerant flow direction of an air conditioner in an air cooling mode provided by an embodiment of the present application;

[0030] Figure 3 is a schematic diagram of the refrigerant flow direction of an air conditioner in an air heating mode provided by an embodiment of the present application;

[0031] Figure 4 This is a schematic diagram of the refrigerant flow direction of an air conditioner in an air-to-water heating mode provided by an embodiment of the present application;

[0032] Figure 5 is a schematic diagram of the refrigerant flow direction of an air conditioner in a defrost mode provided by an embodiment of the present application;

[0033] Figure 6 is a structural schematic diagram of an air conditioner provided by another embodiment of the present application;

[0034] Figure 7 is a schematic diagram of the refrigerant flow direction of an air conditioner in an air cooling mode provided by another embodiment of the present application;

[0035] Figure 8 is a schematic diagram of the refrigerant flow direction of an air conditioner in an air heating mode provided by another embodiment of the present application;

[0036] Fig. 9 is a schematic diagram of the refrigerant flow direction of an air conditioner in an air-to-water heating mode provided by another embodiment of the present application;

[0037] Fig.10 This is a schematic diagram of the refrigerant flow direction of an air conditioner in defrost mode provided by another embodiment of the present application. DETAILED DESCRIPTION

[0038] The embodiments of the present application are described in detail below, and 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 only used to explain the present application, and cannot be understood as limiting the present application.

[0039] In the description of the present application, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application 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 application.

[0040] In the description of this application, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed", etc. are understood to exclude the number itself, and "above", "below", "within", etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing technical features, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0041] In the description of this application, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in this application based on the specific content of the technical solution.

[0042] In some cases, existing unit-type air source heat pump air conditioning products have duct units and cabinet units as indoor units, which provide cooling and heating to the indoor environment through refrigerant-air heat exchange in both summer and winter. However, in winter heating, duct units and cabinet units heat the indoor air, which can cause problems such as hot top and cold bottom, dry air, and poor user comfort. In high temperature in summer and ultra-low temperature in winter, the system capacity of existing unit-type air source heat pump air conditioning products is severely attenuated and cannot provide sufficient cooling and heating to the indoor environment.

[0043] Based on the above situation, the present application proposes an air conditioner, which aims to make the indoor temperature distribution reasonable during winter heating to improve the heating comfort in winter.

[0044] The various embodiments of the air conditioner of the present application are further described below in conjunction with the accompanying drawings.

[0045] like Figure 1 As shown, Figure 1 It is a structural schematic diagram of an air conditioner provided in one embodiment of the present application.

[0046] In one embodiment, the air conditioner of the embodiment of the present application includes but is not limited to a compressor 100, a first heat exchanger 200, a second heat exchanger 300, a third heat exchanger 400, a hydraulic module 500 and a valve assembly.

[0047] It should be noted that the first heat exchanger 200, the second heat exchanger 300 and the third heat exchanger 400 are all connected to the compressor 100 through the refrigerant pipeline, wherein the first heat exchanger 200 is used to exchange heat with outdoor air, and the second heat exchanger 300 is used to exchange heat with indoor air; the hydraulic module 500 is used to exchange heat with the third heat exchanger 400, and the hydraulic module 500 is provided with at least one indoor heating terminal; the valve assembly is arranged in the refrigerant pipeline, and is used to allow the refrigerant to flow through the third heat exchanger 400 in the hot water making mode, so that the liquid flowing through the indoor heating terminal is heated.

[0048] It is understandable that the hydraulic module 500 can be provided with one indoor heating terminal, two indoor heating terminals, or three indoor heating terminals. The embodiment of the present application does not specifically limit the number of indoor heating terminals provided for the hydraulic module 500.

[0049] It is worth noting that, since the embodiment of the present application can allow the refrigerant to flow through the third heat exchanger 400 through the valve assembly in the hot water making mode, so that the liquid flowing through the indoor heating end is heated, the indoor temperature distribution is reasonable, thereby improving the heating comfort in winter.

[0050] Specifically, in one embodiment, the valve assembly includes a flow path switching valve and a flow regulating valve.

[0051] It should be noted that the flow switching valve is respectively connected to the compressor 100, the first heat exchanger 200 and the third heat exchanger 400, and is used to switch the flow direction of the refrigerant in the air conditioner; the flow regulating valve is arranged in the refrigerant pipeline, and is used to adjust the flow of the refrigerant through the first heat exchanger 200, the second heat exchanger 300 or the third heat exchanger 400.

[0052] It can be understood that the embodiment of the present application can, in the hot water making mode, control the flow switching valve to allow the refrigerant to flow from the compressor 100 to the third heat exchanger 400, so that the liquid flowing through the indoor heating end is heated, thereby providing heat to the indoor room through the heated liquid, thereby making the indoor temperature distribution reasonable to improve the comfort of winter heating; in addition, by controlling the flow switching valve, the refrigerant after condensation and heat release can flow from the third heat exchanger 400 through the first heat exchanger 200 back to the compressor 100.

[0053] It is understandable that the embodiment of the present application can control the refrigerant flow through the first heat exchanger 200, the second heat exchanger 300 or the third heat exchanger 400 through a flow regulating valve, so that the desired temperature can be achieved by adjusting the refrigerant flow.

[0054] Specifically, in one embodiment, the flow path switching valve includes a first multi-way valve 610 and a second multi-way valve 620 .

[0055] It should be noted that the first port of the first multi-way valve 610 is connected to the exhaust port of the compressor 100, the second port is connected to the first heat exchanger 200, and the third port is connected to the return air port of the compressor 100; the first port of the second multi-way valve 620 is connected to the fourth port of the first multi-way valve 610, the second port is connected to the third heat exchanger 400, the third port is connected to the return air port of the compressor 100, and the fourth port is connected to the second heat exchanger 300.

[0056] It is understandable that the embodiment of the present application can switch the flow direction of the refrigerant in the air conditioner by adjusting the first multi-way valve 610 and the second multi-way valve 620 to meet the needs of the air conditioner in different working modes.

[0057] It is understandable that the first multi-way valve 610 and the second multi-way valve 620 can be three-way reversing valves or four-way valves, and can be set according to actual needs. The embodiment of the present application does not specifically limit the types of the first multi-way valve 610 and the second multi-way valve 620.

[0058] It can be understood that the first multi-way valve 610 and the second multi-way valve 620 can ensure the correct flow direction of the refrigerant, thereby ensuring the normal operation of the air conditioner.

[0059] Specifically, in one embodiment, the flow regulating valve includes a first regulating valve 630 , a second regulating valve 640 and a third regulating valve 650 .

[0060] It should be noted that the first regulating valve 630 is installed on one side of the first heat exchanger 200 and is used to adjust the flow rate of the refrigerant flowing through the first heat exchanger 200; the second regulating valve 640 is installed on one side of the second heat exchanger 300 and is used to adjust the flow rate of the refrigerant flowing through the second heat exchanger 300; the third regulating valve 650 is installed on one side of the third heat exchanger 400 and is used to adjust the flow rate of the refrigerant flowing through the third heat exchanger 400.

[0061] It can be understood that the embodiment of the present application can adjust the flow rate of the refrigerant through the first heat exchanger 200 by controlling the first regulating valve 630, adjust the flow rate of the refrigerant through the second heat exchanger 300 by controlling the second regulating valve 640, and adjust the flow rate of the refrigerant through the third heat exchanger 400 by controlling the third regulating valve 650, so as to achieve the desired temperature by adjusting the refrigerant flow rate.

[0062] It is understandable that the first regulating valve 630 may be a solenoid valve or an electric regulating valve, and may be set according to actual needs. The embodiment of the present application does not specifically limit the type of the first regulating valve 630.

[0063] It is understandable that the second regulating valve 640 may be a solenoid valve or an electric regulating valve, and may be set according to actual needs. The embodiment of the present application does not specifically limit the type of the second regulating valve 640.

[0064] It is understandable that the third regulating valve 650 may be a solenoid valve or an electric regulating valve, and may be set according to actual needs. The embodiment of the present application does not specifically limit the type of the third regulating valve 650.

[0065] It can be understood that the first regulating valve 630 can be located at the first end of the first heat exchanger 200, or at the second end of the first heat exchanger 200; the second regulating valve 640 can be located at the first end of the second heat exchanger 300, or at the second end of the second heat exchanger 300; the third regulating valve 650 can be located at the first end of the third heat exchanger 400, or at the second end of the third heat exchanger 400. The embodiment of the present application does not specifically limit the specific positions of the first regulating valve 630, the second regulating valve 640 and the third regulating valve 650.

[0066] like Figure 2 As shown, Figure 2 This is a schematic diagram of the refrigerant flow direction of an air conditioner in air cooling mode provided by an embodiment of the present application.

[0067] In one embodiment, in the air cooling mode, first, the refrigerant flows out from the exhaust port of the compressor 100; then, the refrigerant flows to the first heat exchanger 200 after passing through the first port and the second port of the first multi-way valve 610; then, the refrigerant flows from the first heat exchanger 200 to the second heat exchanger 300; finally, the refrigerant flows from the second heat exchanger 300 through the fourth port and the third port of the second multi-way valve 620 and then flows back to the return air port of the compressor 100.

[0068] It is understandable that in the air cooling mode, the opening of the first regulating valve 630 is in a fully open state, the second regulating valve 640 is automatically adjusted according to the system state and the ambient temperature, and the third regulating valve 650 is in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows through the first port and the second port of the first multi-way valve 610 to the first heat exchanger 200 for condensation and heat release, and after the condensed refrigerant passes through the first regulating valve 630 and the refrigerant radiator 700, the refrigerant enters the second heat exchanger 300 through the throttling and pressure reduction of the second regulating valve 640 to evaporate and absorb heat, cooling the indoor air, and the refrigerant after evaporation and heat absorption flows through the fourth port and the third port of the second multi-way valve 620 and then flows back to the return air port of the compressor 100. Therefore, the embodiment of the present application realizes the refrigeration of the indoor air by evaporating and absorbing heat through the refrigerant in the second heat exchanger 300.

[0069] like Figure 3 As shown, Figure 3 This is a schematic diagram of the refrigerant flow direction of an air conditioner in air heating mode provided by an embodiment of the present application.

[0070] In one embodiment, in the air heating mode, first, the refrigerant flows out from the exhaust port of the compressor 100; then, the refrigerant passes through the first port and the fourth port of the first multi-way valve 610 and flows to the second multi-way valve 620; then, the refrigerant passes through the first port and the fourth port of the second multi-way valve 620 and flows through the second heat exchanger 300 and flows to the first heat exchanger 200; finally, the refrigerant flows from the first heat exchanger 200 through the second port and the third port of the first multi-way valve 610 and flows back to the return air port of the compressor 100.

[0071] It is understandable that in the air heating mode, the first regulating valve 630 is automatically adjusted according to the system state and the ambient temperature, the second regulating valve 640 is in a fully open state, and the third regulating valve 650 is in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows to the second multi-way valve 620 through the first port and the fourth port of the first multi-way valve 610, and flows to the second heat exchanger 300 through the first port and the fourth port of the second multi-way valve 620 to condense and release heat. After the condensed refrigerant passes through the second regulating valve 640 and the refrigerant radiator 700, the refrigerant enters the first heat exchanger 200 through the throttling and pressure reduction of the first regulating valve 630 to evaporate and absorb heat. After evaporation and absorption of heat, the refrigerant passes through the second port and the third port of the first multi-way valve 610 and then flows back to the return air port of the compressor 100. Therefore, the embodiment of the present application heats the air in the room by condensing the refrigerant in the second heat exchanger 300 to release heat, thereby achieving air heating.

[0072] like Figure 4 As shown, Figure 4 This is a schematic diagram of the refrigerant flow direction of an air conditioner in an air-to-water heating mode provided by an embodiment of the present application.

[0073] In one embodiment, in the air-to-water heating mode, first, the refrigerant flows out from the exhaust port of the compressor 100; then, the refrigerant passes through the first port and the fourth port of the first multi-way valve 610 and flows to the second multi-way valve 620; then, the refrigerant passes through the first port and the second port of the second multi-way valve 620 and flows through the third heat exchanger 400 and flows to the first heat exchanger 200; finally, the refrigerant flows from the first heat exchanger 200 through the second port and the third port of the first multi-way valve 610 and flows back to the return air port of the compressor 100.

[0074] It is understandable that in the air-to-water heating mode, the first regulating valve 630 is automatically adjusted according to the system state and the ambient temperature, the second regulating valve 640 is in a closed state, and the third regulating valve 650 is in a fully open state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows to the second multi-way valve 620 through the first port and the fourth port of the first multi-way valve 610, and flows to the third heat exchanger 400 through the first port and the second port of the second multi-way valve 620 for condensation and heat release. After the condensed refrigerant passes through the third regulating valve 650 and the refrigerant radiator 700, the refrigerant enters the first heat exchanger 200 for evaporation and heat absorption through the throttling and pressure reduction of the first regulating valve 630. After evaporation and heat absorption, the refrigerant after evaporation and heat absorption passes through the second port and the third port of the first multi-way valve 610 and then flows back to the return air port of the compressor 100. Therefore, the embodiment of the present application can heat the liquid at the indoor heating end through the third heat exchanger 400, thereby realizing indoor heating through the heated liquid.

[0075] like Figure 5 As shown, Figure 5 This is a schematic diagram of the refrigerant flow direction of an air conditioner in defrost mode provided by an embodiment of the present application.

[0076] In one embodiment, in the defrost mode, first, the refrigerant flows out from the exhaust port of the compressor 100; then, the refrigerant flows through the first port and the second port of the first multi-way valve 610 to the first heat exchanger 200; then, the refrigerant flows from the first heat exchanger 200 through the third heat exchanger 400 and then flows to the second multi-way valve 620; finally, the refrigerant flows back to the return port of the compressor 100 after passing through the second port and the third port of the second multi-way valve 620.

[0077] It is understandable that in the defrost mode, the first regulating valve 630 is automatically adjusted according to the system state and the ambient temperature, the third regulating valve 650 is in a fully open state, and the second regulating valve 640 is in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows through the first port and the second port of the first multi-way valve 610 to the first heat exchanger 200 for condensation and heat release, and the condensed refrigerant passes through the first regulating valve 630 for throttling and pressure reduction, and then passes through the refrigerant radiator 700 and the third regulating valve 650 to enter the third heat exchanger 400 for evaporation and heat absorption. The refrigerant after evaporation and heat absorption flows back to the return air port of the compressor 100 through the second port and the third port of the second multi-way valve 620. Therefore, the embodiment of the present application can realize the defrosting of the first heat exchanger 200 by condensing and releasing heat through the refrigerant in the first heat exchanger 200, thereby avoiding the situation in which cold air is blown into the room during the defrosting process in the heating mode.

[0078] like Figure 6 As shown, Figure 6 It is a structural schematic diagram of an air conditioner provided in another embodiment of the present application.

[0079] In one embodiment, the air conditioner further includes an economizer 800 and a fourth regulating valve 900 .

[0080] It should be noted that one end of the main flow path of the economizer 800 is connected to the first heat exchanger 200, and the other end is connected to the second heat exchanger 300 and the third heat exchanger 400. One end of the auxiliary flow path of the economizer 800 is connected between the first heat exchanger 200 and the main flow path, and the other end is connected to the spray enthalpy port of the compressor 100. The fourth regulating valve 900 is installed at one end of the auxiliary flow path for adjusting the flow rate of the refrigerant flowing through the auxiliary flow path.

[0081] It is understandable that the fourth regulating valve 900 may be a solenoid valve or an electric regulating valve, and may be set according to actual needs. The embodiment of the present application does not specifically limit the type of the fourth regulating valve 900.

[0082] It should be noted that the fourth regulating valve 900 is used to allow the refrigerant to flow through the auxiliary flow path and then flow into the enthalpy increase port of the compressor 100 in the air cooling mode, air heating mode or hot water heating mode; and the fourth regulating valve 900 is also used to stop the refrigerant from flowing through the auxiliary flow path in the defrost mode.

[0083] like Figure 7 As shown, Figure 7 This is a schematic diagram of the refrigerant flow direction of an air conditioner in air cooling mode provided by another embodiment of the present application.

[0084] In the air cooling mode, the opening of the first regulating valve 630 is in a fully open state, the second regulating valve 640 and the fourth regulating valve 900 are automatically adjusted according to the system state and the ambient temperature, and the third regulating valve 650 is in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows through the first port and the second port of the first multi-way valve 610 to the first heat exchanger 200 for condensation and heat release, and after the condensed refrigerant flows through the first regulating valve 630 to the refrigerant radiator 700, the refrigerant is divided into two paths. The first path of refrigerant is supercooled through the main path of the economizer 800 and throttled and depressurized by the second regulating valve 640 to enter the second heat exchanger 300 for evaporation and heat absorption, cooling the indoor air. After evaporation and heat absorption, the refrigerant flows through the fourth port and the third port of the second multi-way valve 620 and then flows back to the return port of the compressor 100; the second path of refrigerant passes through the fourth regulating valve 900 of the auxiliary flow path of the economizer 800, throttles and depressurizes, enters the economizer 800, absorbs heat and heats up, and then enters the spray enthalpy port of the compressor 100. Therefore, in the embodiment of the present application, the refrigerant evaporates and absorbs heat in the second heat exchanger 300 to cool the indoor air, thereby achieving refrigeration of the indoor air.

[0085] like Figure 8 As shown, Figure 8 This is a schematic diagram of the refrigerant flow direction of an air conditioner in air heating mode provided by another embodiment of the present application.

[0086] In the air heating mode, the first regulating valve 630 and the fourth regulating valve 900 are automatically adjusted according to the system state and the ambient temperature, the second regulating valve 640 is in a fully open state, and the third regulating valve 650 is in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows to the second multi-way valve 620 through the first port and the fourth port of the first multi-way valve 610, and flows to the second heat exchanger 300 through the first port and the fourth port of the second multi-way valve 620 to condense and release heat. After the condensed refrigerant passes through the second regulating valve 640 and the economizer 800 for supercooling, the refrigerant is divided into two paths. The first path of refrigerant passes through the refrigerant radiator 700 and the first regulating valve 630 for throttling and pressure reduction, and then enters the first heat exchanger 200 for evaporation and heat absorption. After evaporation and heat absorption, the refrigerant passes through the second port and the third port of the first multi-way valve 610 and then flows back to the return air port of the compressor 100; the second path of refrigerant passes through the fourth regulating valve 900 of the auxiliary flow path of the economizer 800 for throttling and pressure reduction, enters the economizer 800 for heat absorption and temperature rise, and then enters the spray enthalpy port of the compressor 100. Therefore, the embodiment of the present application heats the air in the room by condensing the refrigerant in the second heat exchanger 300, thereby achieving air heating.

[0087] like Fig. 9 As shown, Fig. 9 It is a schematic diagram of the refrigerant flow direction of an air conditioner in air-to-water heating mode provided by another embodiment of the present application.

[0088] In the air-to-water heating mode, the first regulating valve 630 and the fourth regulating valve 900 are automatically adjusted according to the system state and the ambient temperature, the second regulating valve 640 is in a closed state, and the third regulating valve 650 is in a fully open state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, flows to the second multi-way valve 620 through the first port and the fourth port of the first multi-way valve 610, and flows to the third heat exchanger 400 through the first port and the second port of the second multi-way valve 620 for condensation and heat release. After the condensed refrigerant passes through the third regulating valve 650 and the economizer 800 for supercooling, the refrigerant is divided into two paths. The first path passes through the refrigerant radiator 700 and the first regulating valve 630 for throttling and pressure reduction, and then enters the first heat exchanger 200 for evaporation and heat absorption. After evaporation and heat absorption, the refrigerant passes through the second port and the third port of the first multi-way valve 610 and then flows back to the return air port of the compressor 100; the second path of refrigerant passes through the fourth regulating valve 900 of the auxiliary flow path of the economizer 800 for throttling and pressure reduction, enters the economizer 800 for heat absorption and temperature rise, and then enters the spray enthalpy port of the compressor 100. Therefore, the embodiment of the present application can heat the liquid at the indoor heating end through the third heat exchanger 400, so as to realize indoor heating through the heated liquid.

[0089] like Fig.10 As shown, Fig.10This is a schematic diagram of the refrigerant flow direction of an air conditioner in defrost mode provided by another embodiment of the present application.

[0090] In the defrosting mode, the first regulating valve 630 is automatically adjusted according to the system state and the ambient temperature, the third regulating valve 650 is in a fully open state, and the second regulating valve 640 and the fourth regulating valve 900 are in a closed state. The high-temperature and high-pressure refrigerant flows out from the exhaust port of the compressor 100, and flows to the first heat exchanger 200 through the first port and the second port of the first multi-way valve 610 for condensation and heat release. The condensed refrigerant enters the refrigerant radiator 700 after throttling and depressurization by the first regulating valve 630, and enters the third heat exchanger 400 for evaporation and heat absorption through the economizer 800 and the third regulating valve 650. The refrigerant after evaporation and heat absorption flows back to the return air port of the compressor 100 through the second port and the third port of the second multi-way valve 620. Therefore, the embodiment of the present application can realize the defrosting of the first heat exchanger 200 by condensing and releasing heat through the refrigerant in the first heat exchanger 200, thereby avoiding the situation in which cold air is blown into the room during the defrosting process in the heating mode.

[0091] It is worth noting that the air conditioner of the embodiment of the present application can utilize floor heating, radiator and other water-based indoor heating terminals to provide indoor heating, thereby improving the comfort of winter heating. At the same time, the economizer 800 can solve the problem of serious system capacity attenuation caused by high temperatures in summer and ultra-low temperatures in winter, providing users with a more comfortable indoor environment.

[0092] It can be understood that the first heat exchanger 200 and the third heat exchanger 400 can be configured as an integral structure with the compressor 100 and installed outdoors.

[0093] It is understandable that the first heat exchanger 200 and the third heat exchanger 400 can also be configured as a separate structure from the compressor 100 and installed outdoors.

[0094] It is understandable that the first heat exchanger 200 and the compressor 100 can be configured as an integral structure and installed outdoors. In addition, the third heat exchanger 400 is configured as an integral structure and installed indoors or outdoors to provide hot water and heat indoors.

[0095] It is understandable that the first heat exchanger 200 may include a fin-tube heat exchanger and a microchannel heat exchanger, and may also include other types of heat exchangers. The embodiment of the present application does not specifically limit the form of the first heat exchanger 200.

[0096] It is understandable that the second heat exchanger 300 may include a fin-tube heat exchanger and a microchannel heat exchanger, and may also include other types of heat exchangers. The embodiment of the present application does not specifically limit the form of the second heat exchanger 300.

[0097] It can be understood that the third heat exchanger 400 may include a plate heat exchanger and a shell and tube heat exchanger, and may also include other types of heat exchangers. The embodiment of the present application does not specifically limit the form of the third heat exchanger 400.

[0098] In one embodiment, if Figure 1 As shown, the air conditioner further includes a first liquid storage tank 1000 , one end of the first liquid storage tank 1000 is connected to the third port of the first multi-way valve, and the other end is connected to the return air port of the compressor 100 .

[0099] In one embodiment, if Figure 6 As shown, the air conditioner further includes a second liquid storage tank 1100, one end of which is connected to the economizer 800, and the other end of which is connected to the spray enthalpy outlet of the compressor 100.

[0100] The liquid storage tank (also called a liquid storage tank or receiver) in the air conditioning system circulation loop is an important component. It has multiple functions in the cooling and heating system, such as storing refrigerant, stabilizing pressure, and separating gas and liquid. The following are the main functions of the liquid storage tank in the air conditioning system:

[0101] Storage of refrigerant: The storage tank provides a place to store excess refrigerant. During the operation of the cooling or heating system, some refrigerant may fail to enter the first heat exchanger, the second heat exchanger or the third heat exchanger in time. The storage tank can temporarily store these refrigerants to ensure the normal operation of the system.

[0102] Stabilize pressure: The receiver helps stabilize the pressure in the system. When the cooling or heating system is started or stopped, the pressure in the system may change. The receiver can absorb these pressure fluctuations and reduce the impact on the compressor and other components.

[0103] Separating gas and liquid: The liquid storage tank can separate the refrigerant in gas and liquid state. When the refrigerant comes out of the compressor, it may be in a high-pressure hot gas state. The liquid storage tank allows the hot gas refrigerant to cool and partially liquefy in it, thereby reducing the gas content entering the condenser and improving the heat exchange efficiency.

[0104] Reduce pulsation and noise: The receiver can reduce the refrigerant pulsation in the system, thereby reducing the noise and vibration of the system.

[0105] Filtration and drying: The receiver tank is usually equipped with filtration and drying functions to remove impurities and moisture from the refrigerant. This helps prevent ice blockage and corrosion problems in the system and extend the service life of system components.

[0106] System maintenance and overhaul: The presence of a liquid storage tank makes the maintenance and overhaul of the cooling and heating system more convenient. When the refrigerant needs to be added or replaced, the liquid storage tank provides a convenient access point. At the same time, by observing the state of the refrigerant in the liquid storage tank, the working condition of the system can be judged.

[0107] In summary, the fluid reservoir plays a vital role in the refrigerant circulation loop of the air conditioner system. It not only helps improve the overall efficiency and stability of the system, but also helps maintain the long-term health and reliability of the system. Regular inspection and maintenance of the fluid reservoir to ensure it is in good working condition is essential to maintain the performance of the air conditioner.

[0108] The above is a specific description of the preferred implementation of the present application, but the present application is not limited to the above implementation mode. Technical personnel familiar with the field can also make various equivalent modifications or substitutions under the shared conditions without violating the spirit of the present application. These equivalent modifications or substitutions are all included in the scope defined by the claims of the present application.

Claims

1. An air conditioner, characterized in that: include: compressor; The first heat exchanger, the second heat exchanger and the third heat exchanger are all connected to the compressor through a refrigerant pipeline, the first heat exchanger is used to exchange heat with outdoor air, and the second heat exchanger is used to exchange heat with indoor air; A hydraulic module, exchanging heat with the third heat exchanger, wherein the hydraulic module is provided with at least one indoor heating terminal; A valve assembly is installed on the refrigerant pipeline, and the valve assembly is used to allow the refrigerant to flow through the third heat exchanger in the hot water making mode to heat the liquid flowing through the indoor heating end.

2. The air conditioner according to claim 1, characterized in that: The valve assembly comprises: a flow path switching valve, connected to the compressor, the first heat exchanger, the second heat exchanger and the third heat exchanger respectively, and the flow path switching valve is used to switch the refrigerant flow direction of the air conditioner; A flow regulating valve is installed on the refrigerant pipeline, and the flow regulating valve is used to adjust the refrigerant flow passing through the first heat exchanger, the second heat exchanger or the third heat exchanger.

3. The air conditioner according to claim 2, characterized in that: The flow path switching valve comprises: a first multi-way valve, wherein a first port of the first multi-way valve is connected to an exhaust port of the compressor, a second port of the first multi-way valve is connected to the first heat exchanger, and a third port of the first multi-way valve is connected to an air return port of the compressor; A second multi-way valve, the first port of the second multi-way valve is connected to the fourth port of the first multi-way valve, the second port of the second multi-way valve is connected to the third heat exchanger, the third port of the second multi-way valve is connected to the return air port of the compressor, and the fourth port of the second multi-way valve is connected to the second heat exchanger.

4. The air conditioner according to claim 3, characterized in that: The flow regulating valve comprises: A first regulating valve, disposed on one side of the first heat exchanger, for regulating a flow rate of refrigerant flowing through the first heat exchanger; A second regulating valve, disposed on one side of the second heat exchanger, for regulating a flow rate of the refrigerant flowing through the second heat exchanger; The third regulating valve is arranged on one side of the third heat exchanger and is used to adjust the flow rate of the refrigerant flowing through the third heat exchanger.

5. The air conditioner according to claim 4, characterized in that: In the air cooling mode, the refrigerant flowing out from the exhaust port of the compressor flows through the first port and the second port of the first multi-way valve, the first heat exchanger, the second heat exchanger, the fourth port and the third port of the second multi-way valve in sequence, and then flows into the return air port of the compressor.

6. The air conditioner according to claim 4, characterized in that: In the air heating mode, the refrigerant flowing out from the exhaust port of the compressor flows through the first port and the fourth port of the first multi-way valve, the first port and the fourth port of the second multi-way valve, the second heat exchanger, the first heat exchanger, the second port and the third port of the first multi-way valve in sequence, and then flows into the return air port of the compressor.

7. The air conditioner according to claim 4, characterized in that: In the hot water making mode, the refrigerant flowing out from the exhaust port of the compressor flows through the first port and the fourth port of the first multi-way valve, the first port and the second port of the second multi-way valve, the third heat exchanger, the first heat exchanger, the second port and the third port of the first multi-way valve, and then flows into the return air port of the compressor.

8. The air conditioner according to claim 4, characterized in that: In the defrost mode, the refrigerant flowing out from the exhaust port of the compressor flows through the first port and the second port of the first multi-way valve, the first heat exchanger, the third heat exchanger, the second port and the third port of the second multi-way valve in sequence, and then flows into the return air port of the compressor.

9. The air conditioner according to claim 4, characterized in that: The air conditioner also includes an economizer and a fourth regulating valve. One end of the main flow path of the economizer is connected to the first heat exchanger, and the other end is connected to the second heat exchanger and the third heat exchanger. One end of the auxiliary flow path of the economizer is connected between the first heat exchanger and the main flow path, and the other end is connected to the enthalpy increase port of the compressor. The fourth regulating valve is arranged at one end of the auxiliary flow path for adjusting the refrigerant flow rate flowing through the auxiliary flow path.

10. The air conditioner according to claim 9, characterized in that: The fourth regulating valve is used to allow the refrigerant to flow through the auxiliary flow path and then flow into the enthalpy increase port of the compressor in air cooling mode, air heating mode or hot water heating mode; and the fourth regulating valve is also used to stop the refrigerant from flowing through the auxiliary flow path in defrost mode.

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